Aljabar Linear Contoh

$[\begin{array}{c} - \frac{4}{7} & \frac{2}{7} & \frac{1}{7} & \frac{1}{7} \\ - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array}]$

Langkah 1

Choose the row or column with the most $0$ elements. If there are no $0$ elements choose any row or column. Multiply every element in row $1$ by its cofactor and add.

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Langkah 1.1

Consider the corresponding sign chart.

$| \begin{array}{c} + & - & + & - \\ - & + & - & + \\ + & - & + & - \\ - & + & - & + \end{array} |$

Langkah 1.2

The cofactor is the minor with the sign changed if the indices match a $-$ position on the sign chart.

Langkah 1.3

The minor for $a_{11}$ is the determinant with row $1$ and column $1$ deleted.

$| \begin{array}{c} \frac{1}{7} & - \frac{3}{7} & \frac{1}{14} \\ - \frac{2}{7} & \frac{11}{21} & \frac{1}{42} \\ \frac{6}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} |$

Langkah 1.4

Multiply element $a_{11}$ by its cofactor.

$- \frac{4}{7} | \begin{array}{c} \frac{1}{7} & - \frac{3}{7} & \frac{1}{14} \\ - \frac{2}{7} & \frac{11}{21} & \frac{1}{42} \\ \frac{6}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} |$

Langkah 1.5

The minor for $a_{12}$ is the determinant with row $1$ and column $2$ deleted.

$| \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} |$

Langkah 1.6

Multiply element $a_{12}$ by its cofactor.

$- \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} |$

Langkah 1.7

The minor for $a_{13}$ is the determinant with row $1$ and column $3$ deleted.

$| \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} |$

Langkah 1.8

Multiply element $a_{13}$ by its cofactor.

$\frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} |$

Langkah 1.9

The minor for $a_{14}$ is the determinant with row $1$ and column $4$ deleted.

$| \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 1.10

Multiply element $a_{14}$ by its cofactor.

$- \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 1.11

Add the terms together.

$- \frac{4}{7} | \begin{array}{c} \frac{1}{7} & - \frac{3}{7} & \frac{1}{14} \\ - \frac{2}{7} & \frac{11}{21} & \frac{1}{42} \\ \frac{6}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2

Evaluasi $| \begin{array}{c} \frac{1}{7} & - \frac{3}{7} & \frac{1}{14} \\ - \frac{2}{7} & \frac{11}{21} & \frac{1}{42} \\ \frac{6}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} |$ .

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Langkah 2.1

Choose the row or column with the most $0$ elements. If there are no $0$ elements choose any row or column. Multiply every element in row $1$ by its cofactor and add.

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Langkah 2.1.1

Consider the corresponding sign chart.

$| \begin{array}{c} + & - & + \\ - & + & - \\ + & - & + \end{array} |$

Langkah 2.1.2

The cofactor is the minor with the sign changed if the indices match a $-$ position on the sign chart.

Langkah 2.1.3

The minor for $a_{11}$ is the determinant with row $1$ and column $1$ deleted.

$| \begin{array}{c} \frac{11}{21} & \frac{1}{42} \\ - \frac{18}{7} & - \frac{1}{14} \end{array} |$

Langkah 2.1.4

Multiply element $a_{11}$ by its cofactor.

$\frac{1}{7} | \begin{array}{c} \frac{11}{21} & \frac{1}{42} \\ - \frac{18}{7} & - \frac{1}{14} \end{array} |$

Langkah 2.1.5

The minor for $a_{12}$ is the determinant with row $1$ and column $2$ deleted.

$| \begin{array}{c} - \frac{2}{7} & \frac{1}{42} \\ \frac{6}{7} & - \frac{1}{14} \end{array} |$

Langkah 2.1.6

Multiply element $a_{12}$ by its cofactor.

$\frac{3}{7} | \begin{array}{c} - \frac{2}{7} & \frac{1}{42} \\ \frac{6}{7} & - \frac{1}{14} \end{array} |$

Langkah 2.1.7

The minor for $a_{13}$ is the determinant with row $1$ and column $3$ deleted.

$| \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.1.8

Multiply element $a_{13}$ by its cofactor.

$\frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.1.9

Add the terms together.

$- \frac{4}{7} (\frac{1}{7} | \begin{array}{c} \frac{11}{21} & \frac{1}{42} \\ - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{3}{7} | \begin{array}{c} - \frac{2}{7} & \frac{1}{42} \\ \frac{6}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.2

Evaluasi $| \begin{array}{c} \frac{11}{21} & \frac{1}{42} \\ - \frac{18}{7} & - \frac{1}{14} \end{array} |$ .

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Langkah 2.2.1

Determinan dari matriks $2 \times 2$ dapat dicari menggunakan rumus $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$- \frac{4}{7} (\frac{1}{7} (\frac{11}{21} (- \frac{1}{14}) - (- \frac{18}{7} \cdot \frac{1}{42})) + \frac{3}{7} | \begin{array}{c} - \frac{2}{7} & \frac{1}{42} \\ \frac{6}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.2.2

Sederhanakan determinannya.

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Langkah 2.2.2.1

Sederhanakan setiap suku.

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Langkah 2.2.2.1.1

Kalikan $\frac{11}{21} (- \frac{1}{14})$ .

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Langkah 2.2.2.1.1.1

Kalikan $\frac{11}{21}$ dengan $\frac{1}{14}$ .

$- \frac{4}{7} (\frac{1}{7} (- \frac{11}{21 \cdot 14} - (- \frac{18}{7} \cdot \frac{1}{42})) + \frac{3}{7} | \begin{array}{c} - \frac{2}{7} & \frac{1}{42} \\ \frac{6}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.2.2.1.1.2

Kalikan $21$ dengan $14$ .

$- \frac{4}{7} (\frac{1}{7} (- \frac{11}{294} - (- \frac{18}{7} \cdot \frac{1}{42})) + \frac{3}{7} | \begin{array}{c} - \frac{2}{7} & \frac{1}{42} \\ \frac{6}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.2.2.1.2

Batalkan faktor persekutuan dari $6$ .

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Langkah 2.2.2.1.2.1

Pindahkan negatif pertama pada $- \frac{18}{7}$ ke dalam pembilangnya.

$- \frac{4}{7} (\frac{1}{7} (- \frac{11}{294} - (\frac{- 18}{7} \cdot \frac{1}{42})) + \frac{3}{7} | \begin{array}{c} - \frac{2}{7} & \frac{1}{42} \\ \frac{6}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.2.2.1.2.2

Faktorkan $6$ dari $- 18$ .

$- \frac{4}{7} (\frac{1}{7} (- \frac{11}{294} - (\frac{6 (- 3)}{7} \cdot \frac{1}{42})) + \frac{3}{7} | \begin{array}{c} - \frac{2}{7} & \frac{1}{42} \\ \frac{6}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.2.2.1.2.3

Faktorkan $6$ dari $42$ .

$- \frac{4}{7} (\frac{1}{7} (- \frac{11}{294} - (\frac{6 \cdot - 3}{7} \cdot \frac{1}{6 \cdot 7})) + \frac{3}{7} | \begin{array}{c} - \frac{2}{7} & \frac{1}{42} \\ \frac{6}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.2.2.1.2.4

Batalkan faktor persekutuan.

Langkah 2.2.2.1.2.5

Tulis kembali pernyataannya.

$- \frac{4}{7} (\frac{1}{7} (- \frac{11}{294} - (\frac{- 3}{7} \cdot \frac{1}{7})) + \frac{3}{7} | \begin{array}{c} - \frac{2}{7} & \frac{1}{42} \\ \frac{6}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.2.2.1.3

Kalikan $\frac{- 3}{7}$ dengan $\frac{1}{7}$ .

$- \frac{4}{7} (\frac{1}{7} (- \frac{11}{294} - \frac{- 3}{7 \cdot 7}) + \frac{3}{7} | \begin{array}{c} - \frac{2}{7} & \frac{1}{42} \\ \frac{6}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.2.2.1.4

Kalikan $7$ dengan $7$ .

$- \frac{4}{7} (\frac{1}{7} (- \frac{11}{294} - \frac{- 3}{49}) + \frac{3}{7} | \begin{array}{c} - \frac{2}{7} & \frac{1}{42} \\ \frac{6}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.2.2.1.5

Pindahkan tanda negatif di depan pecahan.

$- \frac{4}{7} (\frac{1}{7} (- \frac{11}{294} - - \frac{3}{49}) + \frac{3}{7} | \begin{array}{c} - \frac{2}{7} & \frac{1}{42} \\ \frac{6}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.2.2.1.6

Kalikan $- - \frac{3}{49}$ .

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Langkah 2.2.2.1.6.1

Kalikan $- 1$ dengan $- 1$ .

$- \frac{4}{7} (\frac{1}{7} (- \frac{11}{294} + 1 (\frac{3}{49})) + \frac{3}{7} | \begin{array}{c} - \frac{2}{7} & \frac{1}{42} \\ \frac{6}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.2.2.1.6.2

Kalikan $\frac{3}{49}$ dengan $1$ .

$- \frac{4}{7} (\frac{1}{7} (- \frac{11}{294} + \frac{3}{49}) + \frac{3}{7} | \begin{array}{c} - \frac{2}{7} & \frac{1}{42} \\ \frac{6}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.2.2.2

Untuk menuliskan $\frac{3}{49}$ sebagai pecahan dengan penyebut umum, kalikan dengan $\frac{6}{6}$ .

$- \frac{4}{7} (\frac{1}{7} (- \frac{11}{294} + \frac{3}{49} \cdot \frac{6}{6}) + \frac{3}{7} | \begin{array}{c} - \frac{2}{7} & \frac{1}{42} \\ \frac{6}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.2.2.3

Tulis setiap pernyataan menggunakan penyebut umum dari $294$ , dengan mengalikan masing-masing pembilang dan penyebut dengan faktor dari $1$ yang sesuai.

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Langkah 2.2.2.3.1

Kalikan $\frac{3}{49}$ dengan $\frac{6}{6}$ .

$- \frac{4}{7} (\frac{1}{7} (- \frac{11}{294} + \frac{3 \cdot 6}{49 \cdot 6}) + \frac{3}{7} | \begin{array}{c} - \frac{2}{7} & \frac{1}{42} \\ \frac{6}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.2.2.3.2

Kalikan $49$ dengan $6$ .

$- \frac{4}{7} (\frac{1}{7} (- \frac{11}{294} + \frac{3 \cdot 6}{294}) + \frac{3}{7} | \begin{array}{c} - \frac{2}{7} & \frac{1}{42} \\ \frac{6}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.2.2.4

Gabungkan pembilang dari penyebut persekutuan.

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{- 11 + 3 \cdot 6}{294} + \frac{3}{7} | \begin{array}{c} - \frac{2}{7} & \frac{1}{42} \\ \frac{6}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.2.2.5

Sederhanakan pembilangnya.

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Langkah 2.2.2.5.1

Kalikan $3$ dengan $6$ .

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{- 11 + 18}{294} + \frac{3}{7} | \begin{array}{c} - \frac{2}{7} & \frac{1}{42} \\ \frac{6}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.2.2.5.2

Tambahkan $- 11$ dan $18$ .

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{7}{294} + \frac{3}{7} | \begin{array}{c} - \frac{2}{7} & \frac{1}{42} \\ \frac{6}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.2.2.6

Hapus faktor persekutuan dari $7$ dan $294$ .

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Langkah 2.2.2.6.1

Faktorkan $7$ dari $7$ .

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{7 (1)}{294} + \frac{3}{7} | \begin{array}{c} - \frac{2}{7} & \frac{1}{42} \\ \frac{6}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.2.2.6.2

Batalkan faktor persekutuan.

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Langkah 2.2.2.6.2.1

Faktorkan $7$ dari $294$ .

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{7 \cdot 1}{7 \cdot 42} + \frac{3}{7} | \begin{array}{c} - \frac{2}{7} & \frac{1}{42} \\ \frac{6}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.2.2.6.2.2

Batalkan faktor persekutuan.

Langkah 2.2.2.6.2.3

Tulis kembali pernyataannya.

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} | \begin{array}{c} - \frac{2}{7} & \frac{1}{42} \\ \frac{6}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.3

Evaluasi $| \begin{array}{c} - \frac{2}{7} & \frac{1}{42} \\ \frac{6}{7} & - \frac{1}{14} \end{array} |$ .

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Langkah 2.3.1

Determinan dari matriks $2 \times 2$ dapat dicari menggunakan rumus $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} (- \frac{2}{7} (- \frac{1}{14}) - \frac{6}{7} \cdot \frac{1}{42}) + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.3.2

Sederhanakan determinannya.

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Langkah 2.3.2.1

Sederhanakan setiap suku.

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Langkah 2.3.2.1.1

Batalkan faktor persekutuan dari $2$ .

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Langkah 2.3.2.1.1.1

Pindahkan negatif pertama pada $- \frac{2}{7}$ ke dalam pembilangnya.

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} (\frac{- 2}{7} (- \frac{1}{14}) - \frac{6}{7} \cdot \frac{1}{42}) + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.3.2.1.1.2

Pindahkan negatif pertama pada $- \frac{1}{14}$ ke dalam pembilangnya.

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} (\frac{- 2}{7} \cdot \frac{- 1}{14} - \frac{6}{7} \cdot \frac{1}{42}) + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.3.2.1.1.3

Faktorkan $2$ dari $- 2$ .

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} (\frac{2 (- 1)}{7} \cdot \frac{- 1}{14} - \frac{6}{7} \cdot \frac{1}{42}) + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.3.2.1.1.4

Faktorkan $2$ dari $14$ .

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} (\frac{2 \cdot - 1}{7} \cdot \frac{- 1}{2 \cdot 7} - \frac{6}{7} \cdot \frac{1}{42}) + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.3.2.1.1.5

Batalkan faktor persekutuan.

Langkah 2.3.2.1.1.6

Tulis kembali pernyataannya.

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} (\frac{- 1}{7} \cdot \frac{- 1}{7} - \frac{6}{7} \cdot \frac{1}{42}) + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.3.2.1.2

Kalikan $\frac{- 1}{7}$ dengan $\frac{- 1}{7}$ .

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} (\frac{- - 1}{7 \cdot 7} - \frac{6}{7} \cdot \frac{1}{42}) + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.3.2.1.3

Kalikan $- 1$ dengan $- 1$ .

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} (\frac{1}{7 \cdot 7} - \frac{6}{7} \cdot \frac{1}{42}) + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.3.2.1.4

Kalikan $7$ dengan $7$ .

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} (\frac{1}{49} - \frac{6}{7} \cdot \frac{1}{42}) + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.3.2.1.5

Batalkan faktor persekutuan dari $6$ .

Ketuk untuk lebih banyak langkah...

Langkah 2.3.2.1.5.1

Pindahkan negatif pertama pada $- \frac{6}{7}$ ke dalam pembilangnya.

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} (\frac{1}{49} + \frac{- 6}{7} \cdot \frac{1}{42}) + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.3.2.1.5.2

Faktorkan $6$ dari $- 6$ .

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} (\frac{1}{49} + \frac{6 (- 1)}{7} \cdot \frac{1}{42}) + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.3.2.1.5.3

Faktorkan $6$ dari $42$ .

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} (\frac{1}{49} + \frac{6 \cdot - 1}{7} \cdot \frac{1}{6 \cdot 7}) + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.3.2.1.5.4

Batalkan faktor persekutuan.

Langkah 2.3.2.1.5.5

Tulis kembali pernyataannya.

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} (\frac{1}{49} + \frac{- 1}{7} \cdot \frac{1}{7}) + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.3.2.1.6

Kalikan $\frac{- 1}{7}$ dengan $\frac{1}{7}$ .

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} (\frac{1}{49} + \frac{- 1}{7 \cdot 7}) + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.3.2.1.7

Kalikan $7$ dengan $7$ .

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} (\frac{1}{49} + \frac{- 1}{49}) + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.3.2.1.8

Pindahkan tanda negatif di depan pecahan.

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} (\frac{1}{49} - \frac{1}{49}) + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.3.2.2

Gabungkan pembilang dari penyebut persekutuan.

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{1 - 1}{49} + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.3.2.3

Kurangi $1$ dengan $1$ .

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{0}{49} + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.3.2.4

Bagilah $0$ dengan $49$ .

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot 0 + \frac{1}{14} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.4

Evaluasi $| \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |$ .

Ketuk untuk lebih banyak langkah...

Langkah 2.4.1

Determinan dari matriks $2 \times 2$ dapat dicari menggunakan rumus $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot 0 + \frac{1}{14} (- \frac{2}{7} (- \frac{18}{7}) - \frac{6}{7} \cdot \frac{11}{21})) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.4.2

Sederhanakan determinannya.

Ketuk untuk lebih banyak langkah...

Langkah 2.4.2.1

Sederhanakan setiap suku.

Ketuk untuk lebih banyak langkah...

Langkah 2.4.2.1.1

Kalikan $- \frac{2}{7} (- \frac{18}{7})$ .

Ketuk untuk lebih banyak langkah...

Langkah 2.4.2.1.1.1

Kalikan $- 1$ dengan $- 1$ .

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot 0 + \frac{1}{14} (1 (\frac{2}{7}) \frac{18}{7} - \frac{6}{7} \cdot \frac{11}{21})) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.4.2.1.1.2

Kalikan $\frac{2}{7}$ dengan $1$ .

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot 0 + \frac{1}{14} (\frac{2}{7} \cdot \frac{18}{7} - \frac{6}{7} \cdot \frac{11}{21})) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.4.2.1.1.3

Kalikan $\frac{2}{7}$ dengan $\frac{18}{7}$ .

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot 0 + \frac{1}{14} (\frac{2 \cdot 18}{7 \cdot 7} - \frac{6}{7} \cdot \frac{11}{21})) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.4.2.1.1.4

Kalikan $2$ dengan $18$ .

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot 0 + \frac{1}{14} (\frac{36}{7 \cdot 7} - \frac{6}{7} \cdot \frac{11}{21})) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.4.2.1.1.5

Kalikan $7$ dengan $7$ .

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot 0 + \frac{1}{14} (\frac{36}{49} - \frac{6}{7} \cdot \frac{11}{21})) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.4.2.1.2

Batalkan faktor persekutuan dari $3$ .

Ketuk untuk lebih banyak langkah...

Langkah 2.4.2.1.2.1

Pindahkan negatif pertama pada $- \frac{6}{7}$ ke dalam pembilangnya.

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot 0 + \frac{1}{14} (\frac{36}{49} + \frac{- 6}{7} \cdot \frac{11}{21})) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.4.2.1.2.2

Faktorkan $3$ dari $- 6$ .

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot 0 + \frac{1}{14} (\frac{36}{49} + \frac{3 (- 2)}{7} \cdot \frac{11}{21})) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.4.2.1.2.3

Faktorkan $3$ dari $21$ .

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot 0 + \frac{1}{14} (\frac{36}{49} + \frac{3 \cdot - 2}{7} \cdot \frac{11}{3 \cdot 7})) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.4.2.1.2.4

Batalkan faktor persekutuan.

Langkah 2.4.2.1.2.5

Tulis kembali pernyataannya.

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot 0 + \frac{1}{14} (\frac{36}{49} + \frac{- 2}{7} \cdot \frac{11}{7})) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.4.2.1.3

Kalikan $\frac{- 2}{7}$ dengan $\frac{11}{7}$ .

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot 0 + \frac{1}{14} (\frac{36}{49} + \frac{- 2 \cdot 11}{7 \cdot 7})) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.4.2.1.4

Kalikan $- 2$ dengan $11$ .

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot 0 + \frac{1}{14} (\frac{36}{49} + \frac{- 22}{7 \cdot 7})) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.4.2.1.5

Kalikan $7$ dengan $7$ .

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot 0 + \frac{1}{14} (\frac{36}{49} + \frac{- 22}{49})) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.4.2.1.6

Pindahkan tanda negatif di depan pecahan.

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot 0 + \frac{1}{14} (\frac{36}{49} - \frac{22}{49})) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.4.2.2

Gabungkan pembilang dari penyebut persekutuan.

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot 0 + \frac{1}{14} \cdot \frac{36 - 22}{49}) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.4.2.3

Kurangi $22$ dengan $36$ .

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot 0 + \frac{1}{14} \cdot \frac{14}{49}) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.4.2.4

Hapus faktor persekutuan dari $14$ dan $49$ .

Ketuk untuk lebih banyak langkah...

Langkah 2.4.2.4.1

Faktorkan $7$ dari $14$ .

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot 0 + \frac{1}{14} \cdot \frac{7 (2)}{49}) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.4.2.4.2

Batalkan faktor persekutuan.

Ketuk untuk lebih banyak langkah...

Langkah 2.4.2.4.2.1

Faktorkan $7$ dari $49$ .

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot 0 + \frac{1}{14} \cdot \frac{7 \cdot 2}{7 \cdot 7}) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.4.2.4.2.2

Batalkan faktor persekutuan.

Langkah 2.4.2.4.2.3

Tulis kembali pernyataannya.

$- \frac{4}{7} (\frac{1}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot 0 + \frac{1}{14} \cdot \frac{2}{7}) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.5

Sederhanakan determinannya.

Ketuk untuk lebih banyak langkah...

Langkah 2.5.1

Sederhanakan setiap suku.

Ketuk untuk lebih banyak langkah...

Langkah 2.5.1.1

Kalikan $\frac{1}{7} \cdot \frac{1}{42}$ .

Ketuk untuk lebih banyak langkah...

Langkah 2.5.1.1.1

Kalikan $\frac{1}{7}$ dengan $\frac{1}{42}$ .

$- \frac{4}{7} (\frac{1}{7 \cdot 42} + \frac{3}{7} \cdot 0 + \frac{1}{14} \cdot \frac{2}{7}) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.5.1.1.2

Kalikan $7$ dengan $42$ .

$- \frac{4}{7} (\frac{1}{294} + \frac{3}{7} \cdot 0 + \frac{1}{14} \cdot \frac{2}{7}) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.5.1.2

Kalikan $\frac{3}{7}$ dengan $0$ .

$- \frac{4}{7} (\frac{1}{294} + 0 + \frac{1}{14} \cdot \frac{2}{7}) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.5.1.3

Batalkan faktor persekutuan dari $2$ .

Ketuk untuk lebih banyak langkah...

Langkah 2.5.1.3.1

Faktorkan $2$ dari $14$ .

$- \frac{4}{7} (\frac{1}{294} + 0 + \frac{1}{2 (7)} \cdot \frac{2}{7}) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.5.1.3.2

Batalkan faktor persekutuan.

$- \frac{4}{7} (\frac{1}{294} + 0 + \frac{1}{2 \cdot 7} \cdot \frac{2}{7}) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.5.1.3.3

Tulis kembali pernyataannya.

$- \frac{4}{7} (\frac{1}{294} + 0 + \frac{1}{7} \cdot \frac{1}{7}) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.5.1.4

Kalikan $\frac{1}{7}$ dengan $\frac{1}{7}$ .

$- \frac{4}{7} (\frac{1}{294} + 0 + \frac{1}{7 \cdot 7}) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.5.1.5

Kalikan $7$ dengan $7$ .

$- \frac{4}{7} (\frac{1}{294} + 0 + \frac{1}{49}) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.5.2

Tambahkan $\frac{1}{294}$ dan $0$ .

$- \frac{4}{7} (\frac{1}{294} + \frac{1}{49}) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.5.3

Untuk menuliskan $\frac{1}{49}$ sebagai pecahan dengan penyebut umum, kalikan dengan $\frac{6}{6}$ .

$- \frac{4}{7} (\frac{1}{294} + \frac{1}{49} \cdot \frac{6}{6}) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.5.4

Tulis setiap pernyataan menggunakan penyebut umum dari $294$ , dengan mengalikan masing-masing pembilang dan penyebut dengan faktor dari $1$ yang sesuai.

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Langkah 2.5.4.1

Kalikan $\frac{1}{49}$ dengan $\frac{6}{6}$ .

$- \frac{4}{7} (\frac{1}{294} + \frac{6}{49 \cdot 6}) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.5.4.2

Kalikan $49$ dengan $6$ .

$- \frac{4}{7} (\frac{1}{294} + \frac{6}{294}) - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.5.5

Gabungkan pembilang dari penyebut persekutuan.

$- \frac{4}{7} \cdot \frac{1 + 6}{294} - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.5.6

Tambahkan $1$ dan $6$ .

$- \frac{4}{7} \cdot \frac{7}{294} - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.5.7

Hapus faktor persekutuan dari $7$ dan $294$ .

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Langkah 2.5.7.1

Faktorkan $7$ dari $7$ .

$- \frac{4}{7} \cdot \frac{7 (1)}{294} - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.5.7.2

Batalkan faktor persekutuan.

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Langkah 2.5.7.2.1

Faktorkan $7$ dari $294$ .

$- \frac{4}{7} \cdot \frac{7 \cdot 1}{7 \cdot 42} - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 2.5.7.2.2

Batalkan faktor persekutuan.

Langkah 2.5.7.2.3

Tulis kembali pernyataannya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} | \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3

Evaluasi $| \begin{array}{c} - \frac{9}{7} & - \frac{3}{7} & \frac{1}{14} \\ \frac{40}{21} & \frac{11}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{18}{7} & - \frac{1}{14} \end{array} |$ .

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Langkah 3.1

Choose the row or column with the most $0$ elements. If there are no $0$ elements choose any row or column. Multiply every element in row $1$ by its cofactor and add.

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Langkah 3.1.1

Consider the corresponding sign chart.

$| \begin{array}{c} + & - & + \\ - & + & - \\ + & - & + \end{array} |$

Langkah 3.1.2

The cofactor is the minor with the sign changed if the indices match a $-$ position on the sign chart.

Langkah 3.1.3

The minor for $a_{11}$ is the determinant with row $1$ and column $1$ deleted.

$| \begin{array}{c} \frac{11}{21} & \frac{1}{42} \\ - \frac{18}{7} & - \frac{1}{14} \end{array} |$

Langkah 3.1.4

Multiply element $a_{11}$ by its cofactor.

$- \frac{9}{7} | \begin{array}{c} \frac{11}{21} & \frac{1}{42} \\ - \frac{18}{7} & - \frac{1}{14} \end{array} |$

Langkah 3.1.5

The minor for $a_{12}$ is the determinant with row $1$ and column $2$ deleted.

$| \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} |$

Langkah 3.1.6

Multiply element $a_{12}$ by its cofactor.

$\frac{3}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} |$

Langkah 3.1.7

The minor for $a_{13}$ is the determinant with row $1$ and column $3$ deleted.

$| \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.1.8

Multiply element $a_{13}$ by its cofactor.

$\frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.1.9

Add the terms together.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} | \begin{array}{c} \frac{11}{21} & \frac{1}{42} \\ - \frac{18}{7} & - \frac{1}{14} \end{array} | + \frac{3}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.2

Evaluasi $| \begin{array}{c} \frac{11}{21} & \frac{1}{42} \\ - \frac{18}{7} & - \frac{1}{14} \end{array} |$ .

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Langkah 3.2.1

Determinan dari matriks $2 \times 2$ dapat dicari menggunakan rumus $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} (\frac{11}{21} (- \frac{1}{14}) - (- \frac{18}{7} \cdot \frac{1}{42})) + \frac{3}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.2.2

Sederhanakan determinannya.

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Langkah 3.2.2.1

Sederhanakan setiap suku.

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Langkah 3.2.2.1.1

Kalikan $\frac{11}{21} (- \frac{1}{14})$ .

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Langkah 3.2.2.1.1.1

Kalikan $\frac{11}{21}$ dengan $\frac{1}{14}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} (- \frac{11}{21 \cdot 14} - (- \frac{18}{7} \cdot \frac{1}{42})) + \frac{3}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.2.2.1.1.2

Kalikan $21$ dengan $14$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} (- \frac{11}{294} - (- \frac{18}{7} \cdot \frac{1}{42})) + \frac{3}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.2.2.1.2

Batalkan faktor persekutuan dari $6$ .

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Langkah 3.2.2.1.2.1

Pindahkan negatif pertama pada $- \frac{18}{7}$ ke dalam pembilangnya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} (- \frac{11}{294} - (\frac{- 18}{7} \cdot \frac{1}{42})) + \frac{3}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.2.2.1.2.2

Faktorkan $6$ dari $- 18$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} (- \frac{11}{294} - (\frac{6 (- 3)}{7} \cdot \frac{1}{42})) + \frac{3}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.2.2.1.2.3

Faktorkan $6$ dari $42$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} (- \frac{11}{294} - (\frac{6 \cdot - 3}{7} \cdot \frac{1}{6 \cdot 7})) + \frac{3}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.2.2.1.2.4

Batalkan faktor persekutuan.

Langkah 3.2.2.1.2.5

Tulis kembali pernyataannya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} (- \frac{11}{294} - (\frac{- 3}{7} \cdot \frac{1}{7})) + \frac{3}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.2.2.1.3

Kalikan $\frac{- 3}{7}$ dengan $\frac{1}{7}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} (- \frac{11}{294} - \frac{- 3}{7 \cdot 7}) + \frac{3}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.2.2.1.4

Kalikan $7$ dengan $7$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} (- \frac{11}{294} - \frac{- 3}{49}) + \frac{3}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.2.2.1.5

Pindahkan tanda negatif di depan pecahan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} (- \frac{11}{294} - - \frac{3}{49}) + \frac{3}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.2.2.1.6

Kalikan $- - \frac{3}{49}$ .

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Langkah 3.2.2.1.6.1

Kalikan $- 1$ dengan $- 1$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} (- \frac{11}{294} + 1 (\frac{3}{49})) + \frac{3}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.2.2.1.6.2

Kalikan $\frac{3}{49}$ dengan $1$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} (- \frac{11}{294} + \frac{3}{49}) + \frac{3}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.2.2.2

Untuk menuliskan $\frac{3}{49}$ sebagai pecahan dengan penyebut umum, kalikan dengan $\frac{6}{6}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} (- \frac{11}{294} + \frac{3}{49} \cdot \frac{6}{6}) + \frac{3}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.2.2.3

Tulis setiap pernyataan menggunakan penyebut umum dari $294$ , dengan mengalikan masing-masing pembilang dan penyebut dengan faktor dari $1$ yang sesuai.

Ketuk untuk lebih banyak langkah...

Langkah 3.2.2.3.1

Kalikan $\frac{3}{49}$ dengan $\frac{6}{6}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} (- \frac{11}{294} + \frac{3 \cdot 6}{49 \cdot 6}) + \frac{3}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.2.2.3.2

Kalikan $49$ dengan $6$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} (- \frac{11}{294} + \frac{3 \cdot 6}{294}) + \frac{3}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.2.2.4

Gabungkan pembilang dari penyebut persekutuan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{- 11 + 3 \cdot 6}{294} + \frac{3}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.2.2.5

Sederhanakan pembilangnya.

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Langkah 3.2.2.5.1

Kalikan $3$ dengan $6$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{- 11 + 18}{294} + \frac{3}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.2.2.5.2

Tambahkan $- 11$ dan $18$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{7}{294} + \frac{3}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.2.2.6

Hapus faktor persekutuan dari $7$ dan $294$ .

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Langkah 3.2.2.6.1

Faktorkan $7$ dari $7$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{7 (1)}{294} + \frac{3}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.2.2.6.2

Batalkan faktor persekutuan.

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Langkah 3.2.2.6.2.1

Faktorkan $7$ dari $294$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{7 \cdot 1}{7 \cdot 42} + \frac{3}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.2.2.6.2.2

Batalkan faktor persekutuan.

Langkah 3.2.2.6.2.3

Tulis kembali pernyataannya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.3

Evaluasi $| \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} |$ .

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Langkah 3.3.1

Determinan dari matriks $2 \times 2$ dapat dicari menggunakan rumus $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} (\frac{40}{21} (- \frac{1}{14}) - (- \frac{47}{7} \cdot \frac{1}{42})) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.3.2

Sederhanakan determinannya.

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Langkah 3.3.2.1

Sederhanakan setiap suku.

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Langkah 3.3.2.1.1

Batalkan faktor persekutuan dari $2$ .

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Langkah 3.3.2.1.1.1

Pindahkan negatif pertama pada $- \frac{1}{14}$ ke dalam pembilangnya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} (\frac{40}{21} \cdot \frac{- 1}{14} - (- \frac{47}{7} \cdot \frac{1}{42})) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.3.2.1.1.2

Faktorkan $2$ dari $40$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} (\frac{2 (20)}{21} \cdot \frac{- 1}{14} - (- \frac{47}{7} \cdot \frac{1}{42})) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.3.2.1.1.3

Faktorkan $2$ dari $14$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} (\frac{2 \cdot 20}{21} \cdot \frac{- 1}{2 \cdot 7} - (- \frac{47}{7} \cdot \frac{1}{42})) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.3.2.1.1.4

Batalkan faktor persekutuan.

Langkah 3.3.2.1.1.5

Tulis kembali pernyataannya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} (\frac{20}{21} \cdot \frac{- 1}{7} - (- \frac{47}{7} \cdot \frac{1}{42})) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.3.2.1.2

Kalikan $\frac{20}{21}$ dengan $\frac{- 1}{7}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} (\frac{20 \cdot - 1}{21 \cdot 7} - (- \frac{47}{7} \cdot \frac{1}{42})) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.3.2.1.3

Kalikan $20$ dengan $- 1$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} (\frac{- 20}{21 \cdot 7} - (- \frac{47}{7} \cdot \frac{1}{42})) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.3.2.1.4

Kalikan $21$ dengan $7$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} (\frac{- 20}{147} - (- \frac{47}{7} \cdot \frac{1}{42})) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.3.2.1.5

Pindahkan tanda negatif di depan pecahan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} (- \frac{20}{147} - (- \frac{47}{7} \cdot \frac{1}{42})) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.3.2.1.6

Kalikan $- \frac{47}{7} \cdot \frac{1}{42}$ .

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Langkah 3.3.2.1.6.1

Kalikan $\frac{1}{42}$ dengan $\frac{47}{7}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} (- \frac{20}{147} - - \frac{47}{42 \cdot 7}) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.3.2.1.6.2

Kalikan $42$ dengan $7$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} (- \frac{20}{147} - - \frac{47}{294}) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.3.2.1.7

Kalikan $- - \frac{47}{294}$ .

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Langkah 3.3.2.1.7.1

Kalikan $- 1$ dengan $- 1$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} (- \frac{20}{147} + 1 (\frac{47}{294})) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.3.2.1.7.2

Kalikan $\frac{47}{294}$ dengan $1$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} (- \frac{20}{147} + \frac{47}{294}) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.3.2.2

Untuk menuliskan $- \frac{20}{147}$ sebagai pecahan dengan penyebut umum, kalikan dengan $\frac{2}{2}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} (- \frac{20}{147} \cdot \frac{2}{2} + \frac{47}{294}) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.3.2.3

Tulis setiap pernyataan menggunakan penyebut umum dari $294$ , dengan mengalikan masing-masing pembilang dan penyebut dengan faktor dari $1$ yang sesuai.

Ketuk untuk lebih banyak langkah...

Langkah 3.3.2.3.1

Kalikan $\frac{20}{147}$ dengan $\frac{2}{2}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} (- \frac{20 \cdot 2}{147 \cdot 2} + \frac{47}{294}) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.3.2.3.2

Kalikan $147$ dengan $2$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} (- \frac{20 \cdot 2}{294} + \frac{47}{294}) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.3.2.4

Gabungkan pembilang dari penyebut persekutuan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{- 20 \cdot 2 + 47}{294} + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.3.2.5

Sederhanakan pembilangnya.

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Langkah 3.3.2.5.1

Kalikan $- 20$ dengan $2$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{- 40 + 47}{294} + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.3.2.5.2

Tambahkan $- 40$ dan $47$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{7}{294} + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.3.2.6

Hapus faktor persekutuan dari $7$ dan $294$ .

Ketuk untuk lebih banyak langkah...

Langkah 3.3.2.6.1

Faktorkan $7$ dari $7$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{7 (1)}{294} + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.3.2.6.2

Batalkan faktor persekutuan.

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Langkah 3.3.2.6.2.1

Faktorkan $7$ dari $294$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{7 \cdot 1}{7 \cdot 42} + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.3.2.6.2.2

Batalkan faktor persekutuan.

Langkah 3.3.2.6.2.3

Tulis kembali pernyataannya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.4

Evaluasi $| \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |$ .

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Langkah 3.4.1

Determinan dari matriks $2 \times 2$ dapat dicari menggunakan rumus $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} (\frac{40}{21} (- \frac{18}{7}) - (- \frac{47}{7} \cdot \frac{11}{21}))) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.4.2

Sederhanakan determinannya.

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Langkah 3.4.2.1

Sederhanakan setiap suku.

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Langkah 3.4.2.1.1

Batalkan faktor persekutuan dari $3$ .

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Langkah 3.4.2.1.1.1

Pindahkan negatif pertama pada $- \frac{18}{7}$ ke dalam pembilangnya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} (\frac{40}{21} \cdot \frac{- 18}{7} - (- \frac{47}{7} \cdot \frac{11}{21}))) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.4.2.1.1.2

Faktorkan $3$ dari $21$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} (\frac{40}{3 (7)} \cdot \frac{- 18}{7} - (- \frac{47}{7} \cdot \frac{11}{21}))) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.4.2.1.1.3

Faktorkan $3$ dari $- 18$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} (\frac{40}{3 \cdot 7} \cdot \frac{3 \cdot - 6}{7} - (- \frac{47}{7} \cdot \frac{11}{21}))) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.4.2.1.1.4

Batalkan faktor persekutuan.

Langkah 3.4.2.1.1.5

Tulis kembali pernyataannya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} (\frac{40}{7} \cdot \frac{- 6}{7} - (- \frac{47}{7} \cdot \frac{11}{21}))) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.4.2.1.2

Kalikan $\frac{40}{7}$ dengan $\frac{- 6}{7}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} (\frac{40 \cdot - 6}{7 \cdot 7} - (- \frac{47}{7} \cdot \frac{11}{21}))) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.4.2.1.3

Kalikan $40$ dengan $- 6$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} (\frac{- 240}{7 \cdot 7} - (- \frac{47}{7} \cdot \frac{11}{21}))) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.4.2.1.4

Kalikan $7$ dengan $7$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} (\frac{- 240}{49} - (- \frac{47}{7} \cdot \frac{11}{21}))) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.4.2.1.5

Pindahkan tanda negatif di depan pecahan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} (- \frac{240}{49} - (- \frac{47}{7} \cdot \frac{11}{21}))) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.4.2.1.6

Kalikan $- \frac{47}{7} \cdot \frac{11}{21}$ .

Ketuk untuk lebih banyak langkah...

Langkah 3.4.2.1.6.1

Kalikan $\frac{11}{21}$ dengan $\frac{47}{7}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} (- \frac{240}{49} - - \frac{11 \cdot 47}{21 \cdot 7})) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.4.2.1.6.2

Kalikan $11$ dengan $47$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} (- \frac{240}{49} - - \frac{517}{21 \cdot 7})) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.4.2.1.6.3

Kalikan $21$ dengan $7$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} (- \frac{240}{49} - - \frac{517}{147})) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.4.2.1.7

Kalikan $- - \frac{517}{147}$ .

Ketuk untuk lebih banyak langkah...

Langkah 3.4.2.1.7.1

Kalikan $- 1$ dengan $- 1$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} (- \frac{240}{49} + 1 (\frac{517}{147}))) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.4.2.1.7.2

Kalikan $\frac{517}{147}$ dengan $1$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} (- \frac{240}{49} + \frac{517}{147})) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.4.2.2

Untuk menuliskan $- \frac{240}{49}$ sebagai pecahan dengan penyebut umum, kalikan dengan $\frac{3}{3}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} (- \frac{240}{49} \cdot \frac{3}{3} + \frac{517}{147})) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.4.2.3

Tulis setiap pernyataan menggunakan penyebut umum dari $147$ , dengan mengalikan masing-masing pembilang dan penyebut dengan faktor dari $1$ yang sesuai.

Ketuk untuk lebih banyak langkah...

Langkah 3.4.2.3.1

Kalikan $\frac{240}{49}$ dengan $\frac{3}{3}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} (- \frac{240 \cdot 3}{49 \cdot 3} + \frac{517}{147})) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.4.2.3.2

Kalikan $49$ dengan $3$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} (- \frac{240 \cdot 3}{147} + \frac{517}{147})) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.4.2.4

Gabungkan pembilang dari penyebut persekutuan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} \cdot \frac{- 240 \cdot 3 + 517}{147}) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.4.2.5

Sederhanakan pembilangnya.

Ketuk untuk lebih banyak langkah...

Langkah 3.4.2.5.1

Kalikan $- 240$ dengan $3$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} \cdot \frac{- 720 + 517}{147}) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.4.2.5.2

Tambahkan $- 720$ dan $517$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} \cdot \frac{- 203}{147}) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.4.2.6

Hapus faktor persekutuan dari $- 203$ dan $147$ .

Ketuk untuk lebih banyak langkah...

Langkah 3.4.2.6.1

Faktorkan $7$ dari $- 203$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} \cdot \frac{7 (- 29)}{147}) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.4.2.6.2

Batalkan faktor persekutuan.

Ketuk untuk lebih banyak langkah...

Langkah 3.4.2.6.2.1

Faktorkan $7$ dari $147$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} \cdot \frac{7 \cdot - 29}{7 \cdot 21}) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.4.2.6.2.2

Batalkan faktor persekutuan.

Langkah 3.4.2.6.2.3

Tulis kembali pernyataannya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} \cdot \frac{- 29}{21}) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.4.2.7

Pindahkan tanda negatif di depan pecahan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} (- \frac{29}{21})) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.5

Sederhanakan determinannya.

Ketuk untuk lebih banyak langkah...

Langkah 3.5.1

Sederhanakan setiap suku.

Ketuk untuk lebih banyak langkah...

Langkah 3.5.1.1

Batalkan faktor persekutuan dari $3$ .

Ketuk untuk lebih banyak langkah...

Langkah 3.5.1.1.1

Pindahkan negatif pertama pada $- \frac{9}{7}$ ke dalam pembilangnya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (\frac{- 9}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} (- \frac{29}{21})) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.5.1.1.2

Faktorkan $3$ dari $- 9$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (\frac{3 (- 3)}{7} \cdot \frac{1}{42} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} (- \frac{29}{21})) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.5.1.1.3

Faktorkan $3$ dari $42$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (\frac{3 \cdot - 3}{7} \cdot \frac{1}{3 \cdot 14} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} (- \frac{29}{21})) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.5.1.1.4

Batalkan faktor persekutuan.

Langkah 3.5.1.1.5

Tulis kembali pernyataannya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (\frac{- 3}{7} \cdot \frac{1}{14} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} (- \frac{29}{21})) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.5.1.2

Kalikan $\frac{- 3}{7}$ dengan $\frac{1}{14}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (\frac{- 3}{7 \cdot 14} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} (- \frac{29}{21})) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.5.1.3

Kalikan $7$ dengan $14$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (\frac{- 3}{98} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} (- \frac{29}{21})) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.5.1.4

Pindahkan tanda negatif di depan pecahan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{3}{98} + \frac{3}{7} \cdot \frac{1}{42} + \frac{1}{14} (- \frac{29}{21})) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.5.1.5

Batalkan faktor persekutuan dari $3$ .

Ketuk untuk lebih banyak langkah...

Langkah 3.5.1.5.1

Faktorkan $3$ dari $42$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{3}{98} + \frac{3}{7} \cdot \frac{1}{3 (14)} + \frac{1}{14} (- \frac{29}{21})) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.5.1.5.2

Batalkan faktor persekutuan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{3}{98} + \frac{3}{7} \cdot \frac{1}{3 \cdot 14} + \frac{1}{14} (- \frac{29}{21})) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.5.1.5.3

Tulis kembali pernyataannya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{3}{98} + \frac{1}{7} \cdot \frac{1}{14} + \frac{1}{14} (- \frac{29}{21})) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.5.1.6

Kalikan $\frac{1}{7}$ dengan $\frac{1}{14}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{3}{98} + \frac{1}{7 \cdot 14} + \frac{1}{14} (- \frac{29}{21})) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.5.1.7

Kalikan $7$ dengan $14$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{3}{98} + \frac{1}{98} + \frac{1}{14} (- \frac{29}{21})) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.5.1.8

Kalikan $\frac{1}{14} (- \frac{29}{21})$ .

Ketuk untuk lebih banyak langkah...

Langkah 3.5.1.8.1

Kalikan $\frac{1}{14}$ dengan $\frac{29}{21}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{3}{98} + \frac{1}{98} - \frac{29}{14 \cdot 21}) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.5.1.8.2

Kalikan $14$ dengan $21$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{3}{98} + \frac{1}{98} - \frac{29}{294}) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.5.2

Gabungkan pembilang dari penyebut persekutuan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (\frac{- 3 + 1}{98} + \frac{- 29}{294}) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.5.3

Tambahkan $- 3$ dan $1$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (\frac{- 2}{98} + \frac{- 29}{294}) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.5.4

Sederhanakan setiap suku.

Ketuk untuk lebih banyak langkah...

Langkah 3.5.4.1

Hapus faktor persekutuan dari $- 2$ dan $98$ .

Ketuk untuk lebih banyak langkah...

Langkah 3.5.4.1.1

Faktorkan $2$ dari $- 2$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (\frac{2 (- 1)}{98} + \frac{- 29}{294}) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.5.4.1.2

Batalkan faktor persekutuan.

Ketuk untuk lebih banyak langkah...

Langkah 3.5.4.1.2.1

Faktorkan $2$ dari $98$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (\frac{2 \cdot - 1}{2 \cdot 49} + \frac{- 29}{294}) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.5.4.1.2.2

Batalkan faktor persekutuan.

Langkah 3.5.4.1.2.3

Tulis kembali pernyataannya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (\frac{- 1}{49} + \frac{- 29}{294}) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.5.4.2

Pindahkan tanda negatif di depan pecahan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{1}{49} + \frac{- 29}{294}) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.5.4.3

Pindahkan tanda negatif di depan pecahan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{1}{49} - \frac{29}{294}) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.5.5

Untuk menuliskan $- \frac{1}{49}$ sebagai pecahan dengan penyebut umum, kalikan dengan $\frac{6}{6}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{1}{49} \cdot \frac{6}{6} - \frac{29}{294}) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.5.6

Tulis setiap pernyataan menggunakan penyebut umum dari $294$ , dengan mengalikan masing-masing pembilang dan penyebut dengan faktor dari $1$ yang sesuai.

Ketuk untuk lebih banyak langkah...

Langkah 3.5.6.1

Kalikan $\frac{1}{49}$ dengan $\frac{6}{6}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{6}{49 \cdot 6} - \frac{29}{294}) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.5.6.2

Kalikan $49$ dengan $6$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{6}{294} - \frac{29}{294}) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.5.7

Gabungkan pembilang dari penyebut persekutuan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} \cdot \frac{- 6 - 29}{294} + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.5.8

Kurangi $29$ dengan $- 6$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} \cdot \frac{- 35}{294} + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.5.9

Hapus faktor persekutuan dari $- 35$ dan $294$ .

Ketuk untuk lebih banyak langkah...

Langkah 3.5.9.1

Faktorkan $7$ dari $- 35$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} \cdot \frac{7 (- 5)}{294} + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.5.9.2

Batalkan faktor persekutuan.

Ketuk untuk lebih banyak langkah...

Langkah 3.5.9.2.1

Faktorkan $7$ dari $294$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} \cdot \frac{7 \cdot - 5}{7 \cdot 42} + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.5.9.2.2

Batalkan faktor persekutuan.

Langkah 3.5.9.2.3

Tulis kembali pernyataannya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} \cdot \frac{- 5}{42} + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 3.5.10

Pindahkan tanda negatif di depan pecahan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4

Evaluasi $| \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & \frac{1}{14} \\ \frac{40}{21} & - \frac{2}{7} & \frac{1}{42} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{1}{14} \end{array} |$ .

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Langkah 4.1

Choose the row or column with the most $0$ elements. If there are no $0$ elements choose any row or column. Multiply every element in row $1$ by its cofactor and add.

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Langkah 4.1.1

Consider the corresponding sign chart.

$| \begin{array}{c} + & - & + \\ - & + & - \\ + & - & + \end{array} |$

Langkah 4.1.2

The cofactor is the minor with the sign changed if the indices match a $-$ position on the sign chart.

Langkah 4.1.3

The minor for $a_{11}$ is the determinant with row $1$ and column $1$ deleted.

$| \begin{array}{c} - \frac{2}{7} & \frac{1}{42} \\ \frac{6}{7} & - \frac{1}{14} \end{array} |$

Langkah 4.1.4

Multiply element $a_{11}$ by its cofactor.

$- \frac{9}{7} | \begin{array}{c} - \frac{2}{7} & \frac{1}{42} \\ \frac{6}{7} & - \frac{1}{14} \end{array} |$

Langkah 4.1.5

The minor for $a_{12}$ is the determinant with row $1$ and column $2$ deleted.

$| \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} |$

Langkah 4.1.6

Multiply element $a_{12}$ by its cofactor.

$- \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} |$

Langkah 4.1.7

The minor for $a_{13}$ is the determinant with row $1$ and column $3$ deleted.

$| \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |$

Langkah 4.1.8

Multiply element $a_{13}$ by its cofactor.

$\frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |$

Langkah 4.1.9

Add the terms together.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} | \begin{array}{c} - \frac{2}{7} & \frac{1}{42} \\ \frac{6}{7} & - \frac{1}{14} \end{array} | - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.2

Evaluasi $| \begin{array}{c} - \frac{2}{7} & \frac{1}{42} \\ \frac{6}{7} & - \frac{1}{14} \end{array} |$ .

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Langkah 4.2.1

Determinan dari matriks $2 \times 2$ dapat dicari menggunakan rumus $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} (- \frac{2}{7} (- \frac{1}{14}) - \frac{6}{7} \cdot \frac{1}{42}) - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.2.2

Sederhanakan determinannya.

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Langkah 4.2.2.1

Sederhanakan setiap suku.

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Langkah 4.2.2.1.1

Batalkan faktor persekutuan dari $2$ .

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Langkah 4.2.2.1.1.1

Pindahkan negatif pertama pada $- \frac{2}{7}$ ke dalam pembilangnya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} (\frac{- 2}{7} (- \frac{1}{14}) - \frac{6}{7} \cdot \frac{1}{42}) - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.2.2.1.1.2

Pindahkan negatif pertama pada $- \frac{1}{14}$ ke dalam pembilangnya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} (\frac{- 2}{7} \cdot \frac{- 1}{14} - \frac{6}{7} \cdot \frac{1}{42}) - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.2.2.1.1.3

Faktorkan $2$ dari $- 2$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} (\frac{2 (- 1)}{7} \cdot \frac{- 1}{14} - \frac{6}{7} \cdot \frac{1}{42}) - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.2.2.1.1.4

Faktorkan $2$ dari $14$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} (\frac{2 \cdot - 1}{7} \cdot \frac{- 1}{2 \cdot 7} - \frac{6}{7} \cdot \frac{1}{42}) - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.2.2.1.1.5

Batalkan faktor persekutuan.

Langkah 4.2.2.1.1.6

Tulis kembali pernyataannya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} (\frac{- 1}{7} \cdot \frac{- 1}{7} - \frac{6}{7} \cdot \frac{1}{42}) - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.2.2.1.2

Kalikan $\frac{- 1}{7}$ dengan $\frac{- 1}{7}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} (\frac{- - 1}{7 \cdot 7} - \frac{6}{7} \cdot \frac{1}{42}) - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.2.2.1.3

Kalikan $- 1$ dengan $- 1$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} (\frac{1}{7 \cdot 7} - \frac{6}{7} \cdot \frac{1}{42}) - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.2.2.1.4

Kalikan $7$ dengan $7$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} (\frac{1}{49} - \frac{6}{7} \cdot \frac{1}{42}) - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.2.2.1.5

Batalkan faktor persekutuan dari $6$ .

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Langkah 4.2.2.1.5.1

Pindahkan negatif pertama pada $- \frac{6}{7}$ ke dalam pembilangnya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} (\frac{1}{49} + \frac{- 6}{7} \cdot \frac{1}{42}) - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.2.2.1.5.2

Faktorkan $6$ dari $- 6$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} (\frac{1}{49} + \frac{6 (- 1)}{7} \cdot \frac{1}{42}) - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.2.2.1.5.3

Faktorkan $6$ dari $42$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} (\frac{1}{49} + \frac{6 \cdot - 1}{7} \cdot \frac{1}{6 \cdot 7}) - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.2.2.1.5.4

Batalkan faktor persekutuan.

Langkah 4.2.2.1.5.5

Tulis kembali pernyataannya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} (\frac{1}{49} + \frac{- 1}{7} \cdot \frac{1}{7}) - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.2.2.1.6

Kalikan $\frac{- 1}{7}$ dengan $\frac{1}{7}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} (\frac{1}{49} + \frac{- 1}{7 \cdot 7}) - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.2.2.1.7

Kalikan $7$ dengan $7$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} (\frac{1}{49} + \frac{- 1}{49}) - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.2.2.1.8

Pindahkan tanda negatif di depan pecahan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} (\frac{1}{49} - \frac{1}{49}) - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.2.2.2

Gabungkan pembilang dari penyebut persekutuan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot \frac{1 - 1}{49} - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.2.2.3

Kurangi $1$ dengan $1$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot \frac{0}{49} - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.2.2.4

Bagilah $0$ dengan $49$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} | + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.3

Evaluasi $| \begin{array}{c} \frac{40}{21} & \frac{1}{42} \\ - \frac{47}{7} & - \frac{1}{14} \end{array} |$ .

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Langkah 4.3.1

Determinan dari matriks $2 \times 2$ dapat dicari menggunakan rumus $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} (\frac{40}{21} (- \frac{1}{14}) - (- \frac{47}{7} \cdot \frac{1}{42})) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.3.2

Sederhanakan determinannya.

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Langkah 4.3.2.1

Sederhanakan setiap suku.

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Langkah 4.3.2.1.1

Batalkan faktor persekutuan dari $2$ .

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Langkah 4.3.2.1.1.1

Pindahkan negatif pertama pada $- \frac{1}{14}$ ke dalam pembilangnya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} (\frac{40}{21} \cdot \frac{- 1}{14} - (- \frac{47}{7} \cdot \frac{1}{42})) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.3.2.1.1.2

Faktorkan $2$ dari $40$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} (\frac{2 (20)}{21} \cdot \frac{- 1}{14} - (- \frac{47}{7} \cdot \frac{1}{42})) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.3.2.1.1.3

Faktorkan $2$ dari $14$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} (\frac{2 \cdot 20}{21} \cdot \frac{- 1}{2 \cdot 7} - (- \frac{47}{7} \cdot \frac{1}{42})) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.3.2.1.1.4

Batalkan faktor persekutuan.

Langkah 4.3.2.1.1.5

Tulis kembali pernyataannya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} (\frac{20}{21} \cdot \frac{- 1}{7} - (- \frac{47}{7} \cdot \frac{1}{42})) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.3.2.1.2

Kalikan $\frac{20}{21}$ dengan $\frac{- 1}{7}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} (\frac{20 \cdot - 1}{21 \cdot 7} - (- \frac{47}{7} \cdot \frac{1}{42})) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.3.2.1.3

Kalikan $20$ dengan $- 1$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} (\frac{- 20}{21 \cdot 7} - (- \frac{47}{7} \cdot \frac{1}{42})) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.3.2.1.4

Kalikan $21$ dengan $7$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} (\frac{- 20}{147} - (- \frac{47}{7} \cdot \frac{1}{42})) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.3.2.1.5

Pindahkan tanda negatif di depan pecahan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} (- \frac{20}{147} - (- \frac{47}{7} \cdot \frac{1}{42})) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.3.2.1.6

Kalikan $- \frac{47}{7} \cdot \frac{1}{42}$ .

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Langkah 4.3.2.1.6.1

Kalikan $\frac{1}{42}$ dengan $\frac{47}{7}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} (- \frac{20}{147} - - \frac{47}{42 \cdot 7}) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.3.2.1.6.2

Kalikan $42$ dengan $7$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} (- \frac{20}{147} - - \frac{47}{294}) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.3.2.1.7

Kalikan $- - \frac{47}{294}$ .

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Langkah 4.3.2.1.7.1

Kalikan $- 1$ dengan $- 1$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} (- \frac{20}{147} + 1 (\frac{47}{294})) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.3.2.1.7.2

Kalikan $\frac{47}{294}$ dengan $1$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} (- \frac{20}{147} + \frac{47}{294}) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.3.2.2

Untuk menuliskan $- \frac{20}{147}$ sebagai pecahan dengan penyebut umum, kalikan dengan $\frac{2}{2}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} (- \frac{20}{147} \cdot \frac{2}{2} + \frac{47}{294}) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.3.2.3

Tulis setiap pernyataan menggunakan penyebut umum dari $294$ , dengan mengalikan masing-masing pembilang dan penyebut dengan faktor dari $1$ yang sesuai.

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Langkah 4.3.2.3.1

Kalikan $\frac{20}{147}$ dengan $\frac{2}{2}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} (- \frac{20 \cdot 2}{147 \cdot 2} + \frac{47}{294}) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.3.2.3.2

Kalikan $147$ dengan $2$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} (- \frac{20 \cdot 2}{294} + \frac{47}{294}) + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.3.2.4

Gabungkan pembilang dari penyebut persekutuan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} \cdot \frac{- 20 \cdot 2 + 47}{294} + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.3.2.5

Sederhanakan pembilangnya.

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Langkah 4.3.2.5.1

Kalikan $- 20$ dengan $2$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} \cdot \frac{- 40 + 47}{294} + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.3.2.5.2

Tambahkan $- 40$ dan $47$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} \cdot \frac{7}{294} + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.3.2.6

Hapus faktor persekutuan dari $7$ dan $294$ .

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Langkah 4.3.2.6.1

Faktorkan $7$ dari $7$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} \cdot \frac{7 (1)}{294} + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.3.2.6.2

Batalkan faktor persekutuan.

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Langkah 4.3.2.6.2.1

Faktorkan $7$ dari $294$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} \cdot \frac{7 \cdot 1}{7 \cdot 42} + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.3.2.6.2.2

Batalkan faktor persekutuan.

Langkah 4.3.2.6.2.3

Tulis kembali pernyataannya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} \cdot \frac{1}{42} + \frac{1}{14} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.4

Evaluasi $| \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |$ .

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Langkah 4.4.1

Determinan dari matriks $2 \times 2$ dapat dicari menggunakan rumus $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} \cdot \frac{1}{42} + \frac{1}{14} (\frac{40}{21} \cdot \frac{6}{7} - (- \frac{47}{7} (- \frac{2}{7})))) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.4.2

Sederhanakan determinannya.

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Langkah 4.4.2.1

Sederhanakan setiap suku.

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Langkah 4.4.2.1.1

Batalkan faktor persekutuan dari $3$ .

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Langkah 4.4.2.1.1.1

Faktorkan $3$ dari $21$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} \cdot \frac{1}{42} + \frac{1}{14} (\frac{40}{3 (7)} \cdot \frac{6}{7} - (- \frac{47}{7} (- \frac{2}{7})))) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.4.2.1.1.2

Faktorkan $3$ dari $6$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} \cdot \frac{1}{42} + \frac{1}{14} (\frac{40}{3 \cdot 7} \cdot \frac{3 \cdot 2}{7} - (- \frac{47}{7} (- \frac{2}{7})))) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.4.2.1.1.3

Batalkan faktor persekutuan.

Langkah 4.4.2.1.1.4

Tulis kembali pernyataannya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} \cdot \frac{1}{42} + \frac{1}{14} (\frac{40}{7} \cdot \frac{2}{7} - (- \frac{47}{7} (- \frac{2}{7})))) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.4.2.1.2

Kalikan $\frac{40}{7}$ dengan $\frac{2}{7}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} \cdot \frac{1}{42} + \frac{1}{14} (\frac{40 \cdot 2}{7 \cdot 7} - (- \frac{47}{7} (- \frac{2}{7})))) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.4.2.1.3

Kalikan $40$ dengan $2$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} \cdot \frac{1}{42} + \frac{1}{14} (\frac{80}{7 \cdot 7} - (- \frac{47}{7} (- \frac{2}{7})))) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.4.2.1.4

Kalikan $7$ dengan $7$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} \cdot \frac{1}{42} + \frac{1}{14} (\frac{80}{49} - (- \frac{47}{7} (- \frac{2}{7})))) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.4.2.1.5

Kalikan $- \frac{47}{7} (- \frac{2}{7})$ .

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Langkah 4.4.2.1.5.1

Kalikan $- 1$ dengan $- 1$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} \cdot \frac{1}{42} + \frac{1}{14} (\frac{80}{49} - (1 (\frac{47}{7}) \frac{2}{7}))) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.4.2.1.5.2

Kalikan $\frac{47}{7}$ dengan $1$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} \cdot \frac{1}{42} + \frac{1}{14} (\frac{80}{49} - (\frac{47}{7} \cdot \frac{2}{7}))) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.4.2.1.5.3

Kalikan $\frac{47}{7}$ dengan $\frac{2}{7}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} \cdot \frac{1}{42} + \frac{1}{14} (\frac{80}{49} - \frac{47 \cdot 2}{7 \cdot 7})) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.4.2.1.5.4

Kalikan $47$ dengan $2$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} \cdot \frac{1}{42} + \frac{1}{14} (\frac{80}{49} - \frac{94}{7 \cdot 7})) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.4.2.1.5.5

Kalikan $7$ dengan $7$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} \cdot \frac{1}{42} + \frac{1}{14} (\frac{80}{49} - \frac{94}{49})) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.4.2.2

Gabungkan pembilang dari penyebut persekutuan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} \cdot \frac{1}{42} + \frac{1}{14} \cdot \frac{80 - 94}{49}) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.4.2.3

Kurangi $94$ dengan $80$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} \cdot \frac{1}{42} + \frac{1}{14} \cdot \frac{- 14}{49}) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.4.2.4

Hapus faktor persekutuan dari $- 14$ dan $49$ .

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Langkah 4.4.2.4.1

Faktorkan $7$ dari $- 14$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} \cdot \frac{1}{42} + \frac{1}{14} \cdot \frac{7 (- 2)}{49}) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.4.2.4.2

Batalkan faktor persekutuan.

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Langkah 4.4.2.4.2.1

Faktorkan $7$ dari $49$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} \cdot \frac{1}{42} + \frac{1}{14} \cdot \frac{7 \cdot - 2}{7 \cdot 7}) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.4.2.4.2.2

Batalkan faktor persekutuan.

Langkah 4.4.2.4.2.3

Tulis kembali pernyataannya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} \cdot \frac{1}{42} + \frac{1}{14} \cdot \frac{- 2}{7}) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.4.2.5

Pindahkan tanda negatif di depan pecahan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{9}{7} \cdot 0 - \frac{1}{7} \cdot \frac{1}{42} + \frac{1}{14} (- \frac{2}{7})) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.5

Sederhanakan determinannya.

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Langkah 4.5.1

Sederhanakan setiap suku.

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Langkah 4.5.1.1

Kalikan $- \frac{9}{7} \cdot 0$ .

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Langkah 4.5.1.1.1

Kalikan $0$ dengan $- 1$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (0 (\frac{9}{7}) - \frac{1}{7} \cdot \frac{1}{42} + \frac{1}{14} (- \frac{2}{7})) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.5.1.1.2

Kalikan $0$ dengan $\frac{9}{7}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (0 - \frac{1}{7} \cdot \frac{1}{42} + \frac{1}{14} (- \frac{2}{7})) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.5.1.2

Kalikan $- \frac{1}{7} \cdot \frac{1}{42}$ .

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Langkah 4.5.1.2.1

Kalikan $\frac{1}{42}$ dengan $\frac{1}{7}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (0 - \frac{1}{42 \cdot 7} + \frac{1}{14} (- \frac{2}{7})) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.5.1.2.2

Kalikan $42$ dengan $7$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (0 - \frac{1}{294} + \frac{1}{14} (- \frac{2}{7})) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.5.1.3

Batalkan faktor persekutuan dari $2$ .

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Langkah 4.5.1.3.1

Pindahkan negatif pertama pada $- \frac{2}{7}$ ke dalam pembilangnya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (0 - \frac{1}{294} + \frac{1}{14} \cdot \frac{- 2}{7}) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.5.1.3.2

Faktorkan $2$ dari $14$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (0 - \frac{1}{294} + \frac{1}{2 (7)} \cdot \frac{- 2}{7}) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.5.1.3.3

Faktorkan $2$ dari $- 2$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (0 - \frac{1}{294} + \frac{1}{2 \cdot 7} \cdot \frac{2 \cdot - 1}{7}) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.5.1.3.4

Batalkan faktor persekutuan.

Langkah 4.5.1.3.5

Tulis kembali pernyataannya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (0 - \frac{1}{294} + \frac{1}{7} \cdot \frac{- 1}{7}) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.5.1.4

Kalikan $\frac{1}{7}$ dengan $\frac{- 1}{7}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (0 - \frac{1}{294} + \frac{- 1}{7 \cdot 7}) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.5.1.5

Kalikan $7$ dengan $7$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (0 - \frac{1}{294} + \frac{- 1}{49}) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.5.1.6

Pindahkan tanda negatif di depan pecahan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (0 - \frac{1}{294} - \frac{1}{49}) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.5.2

Kurangi $\frac{1}{294}$ dengan $0$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{294} - \frac{1}{49}) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.5.3

Untuk menuliskan $- \frac{1}{49}$ sebagai pecahan dengan penyebut umum, kalikan dengan $\frac{6}{6}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{294} - \frac{1}{49} \cdot \frac{6}{6}) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.5.4

Tulis setiap pernyataan menggunakan penyebut umum dari $294$ , dengan mengalikan masing-masing pembilang dan penyebut dengan faktor dari $1$ yang sesuai.

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Langkah 4.5.4.1

Kalikan $\frac{1}{49}$ dengan $\frac{6}{6}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{294} - \frac{6}{49 \cdot 6}) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.5.4.2

Kalikan $49$ dengan $6$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{294} - \frac{6}{294}) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.5.5

Gabungkan pembilang dari penyebut persekutuan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} \cdot \frac{- 1 - 6}{294} - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.5.6

Kurangi $6$ dengan $- 1$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} \cdot \frac{- 7}{294} - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.5.7

Hapus faktor persekutuan dari $- 7$ dan $294$ .

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Langkah 4.5.7.1

Faktorkan $7$ dari $- 7$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} \cdot \frac{7 (- 1)}{294} - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.5.7.2

Batalkan faktor persekutuan.

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Langkah 4.5.7.2.1

Faktorkan $7$ dari $294$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} \cdot \frac{7 \cdot - 1}{7 \cdot 42} - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.5.7.2.2

Batalkan faktor persekutuan.

Langkah 4.5.7.2.3

Tulis kembali pernyataannya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} \cdot \frac{- 1}{42} - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 4.5.8

Pindahkan tanda negatif di depan pecahan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} | \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 5

Evaluasi $| \begin{array}{c} - \frac{9}{7} & \frac{1}{7} & - \frac{3}{7} \\ \frac{40}{21} & - \frac{2}{7} & \frac{11}{21} \\ - \frac{47}{7} & \frac{6}{7} & - \frac{18}{7} \end{array} |$ .

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Langkah 5.1

Choose the row or column with the most $0$ elements. If there are no $0$ elements choose any row or column. Multiply every element in row $1$ by its cofactor and add.

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Langkah 5.1.1

Consider the corresponding sign chart.

$| \begin{array}{c} + & - & + \\ - & + & - \\ + & - & + \end{array} |$

Langkah 5.1.2

The cofactor is the minor with the sign changed if the indices match a $-$ position on the sign chart.

Langkah 5.1.3

The minor for $a_{11}$ is the determinant with row $1$ and column $1$ deleted.

$| \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 5.1.4

Multiply element $a_{11}$ by its cofactor.

$- \frac{9}{7} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |$

Langkah 5.1.5

The minor for $a_{12}$ is the determinant with row $1$ and column $2$ deleted.

$| \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |$

Langkah 5.1.6

Multiply element $a_{12}$ by its cofactor.

$- \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |$

Langkah 5.1.7

The minor for $a_{13}$ is the determinant with row $1$ and column $3$ deleted.

$| \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |$

Langkah 5.1.8

Multiply element $a_{13}$ by its cofactor.

$- \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |$

Langkah 5.1.9

Add the terms together.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} | \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} | - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} | - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.2

Evaluasi $| \begin{array}{c} - \frac{2}{7} & \frac{11}{21} \\ \frac{6}{7} & - \frac{18}{7} \end{array} |$ .

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Langkah 5.2.1

Determinan dari matriks $2 \times 2$ dapat dicari menggunakan rumus $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} (- \frac{2}{7} (- \frac{18}{7}) - \frac{6}{7} \cdot \frac{11}{21}) - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} | - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.2.2

Sederhanakan determinannya.

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Langkah 5.2.2.1

Sederhanakan setiap suku.

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Langkah 5.2.2.1.1

Kalikan $- \frac{2}{7} (- \frac{18}{7})$ .

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Langkah 5.2.2.1.1.1

Kalikan $- 1$ dengan $- 1$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} (1 (\frac{2}{7}) \frac{18}{7} - \frac{6}{7} \cdot \frac{11}{21}) - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} | - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.2.2.1.1.2

Kalikan $\frac{2}{7}$ dengan $1$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} (\frac{2}{7} \cdot \frac{18}{7} - \frac{6}{7} \cdot \frac{11}{21}) - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} | - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.2.2.1.1.3

Kalikan $\frac{2}{7}$ dengan $\frac{18}{7}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} (\frac{2 \cdot 18}{7 \cdot 7} - \frac{6}{7} \cdot \frac{11}{21}) - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} | - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.2.2.1.1.4

Kalikan $2$ dengan $18$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} (\frac{36}{7 \cdot 7} - \frac{6}{7} \cdot \frac{11}{21}) - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} | - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.2.2.1.1.5

Kalikan $7$ dengan $7$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} (\frac{36}{49} - \frac{6}{7} \cdot \frac{11}{21}) - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} | - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.2.2.1.2

Batalkan faktor persekutuan dari $3$ .

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Langkah 5.2.2.1.2.1

Pindahkan negatif pertama pada $- \frac{6}{7}$ ke dalam pembilangnya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} (\frac{36}{49} + \frac{- 6}{7} \cdot \frac{11}{21}) - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} | - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.2.2.1.2.2

Faktorkan $3$ dari $- 6$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} (\frac{36}{49} + \frac{3 (- 2)}{7} \cdot \frac{11}{21}) - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} | - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.2.2.1.2.3

Faktorkan $3$ dari $21$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} (\frac{36}{49} + \frac{3 \cdot - 2}{7} \cdot \frac{11}{3 \cdot 7}) - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} | - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.2.2.1.2.4

Batalkan faktor persekutuan.

Langkah 5.2.2.1.2.5

Tulis kembali pernyataannya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} (\frac{36}{49} + \frac{- 2}{7} \cdot \frac{11}{7}) - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} | - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.2.2.1.3

Kalikan $\frac{- 2}{7}$ dengan $\frac{11}{7}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} (\frac{36}{49} + \frac{- 2 \cdot 11}{7 \cdot 7}) - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} | - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.2.2.1.4

Kalikan $- 2$ dengan $11$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} (\frac{36}{49} + \frac{- 22}{7 \cdot 7}) - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} | - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.2.2.1.5

Kalikan $7$ dengan $7$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} (\frac{36}{49} + \frac{- 22}{49}) - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} | - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.2.2.1.6

Pindahkan tanda negatif di depan pecahan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} (\frac{36}{49} - \frac{22}{49}) - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} | - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.2.2.2

Gabungkan pembilang dari penyebut persekutuan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{36 - 22}{49} - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} | - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.2.2.3

Kurangi $22$ dengan $36$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{14}{49} - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} | - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.2.2.4

Hapus faktor persekutuan dari $14$ dan $49$ .

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Langkah 5.2.2.4.1

Faktorkan $7$ dari $14$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{7 (2)}{49} - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} | - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.2.2.4.2

Batalkan faktor persekutuan.

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Langkah 5.2.2.4.2.1

Faktorkan $7$ dari $49$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{7 \cdot 2}{7 \cdot 7} - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} | - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.2.2.4.2.2

Batalkan faktor persekutuan.

Langkah 5.2.2.4.2.3

Tulis kembali pernyataannya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} | \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} | - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.3

Evaluasi $| \begin{array}{c} \frac{40}{21} & \frac{11}{21} \\ - \frac{47}{7} & - \frac{18}{7} \end{array} |$ .

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Langkah 5.3.1

Determinan dari matriks $2 \times 2$ dapat dicari menggunakan rumus $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} (\frac{40}{21} (- \frac{18}{7}) - (- \frac{47}{7} \cdot \frac{11}{21})) - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.3.2

Sederhanakan determinannya.

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Langkah 5.3.2.1

Sederhanakan setiap suku.

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Langkah 5.3.2.1.1

Batalkan faktor persekutuan dari $3$ .

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Langkah 5.3.2.1.1.1

Pindahkan negatif pertama pada $- \frac{18}{7}$ ke dalam pembilangnya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} (\frac{40}{21} \cdot \frac{- 18}{7} - (- \frac{47}{7} \cdot \frac{11}{21})) - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.3.2.1.1.2

Faktorkan $3$ dari $21$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} (\frac{40}{3 (7)} \cdot \frac{- 18}{7} - (- \frac{47}{7} \cdot \frac{11}{21})) - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.3.2.1.1.3

Faktorkan $3$ dari $- 18$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} (\frac{40}{3 \cdot 7} \cdot \frac{3 \cdot - 6}{7} - (- \frac{47}{7} \cdot \frac{11}{21})) - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.3.2.1.1.4

Batalkan faktor persekutuan.

Langkah 5.3.2.1.1.5

Tulis kembali pernyataannya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} (\frac{40}{7} \cdot \frac{- 6}{7} - (- \frac{47}{7} \cdot \frac{11}{21})) - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.3.2.1.2

Kalikan $\frac{40}{7}$ dengan $\frac{- 6}{7}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} (\frac{40 \cdot - 6}{7 \cdot 7} - (- \frac{47}{7} \cdot \frac{11}{21})) - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.3.2.1.3

Kalikan $40$ dengan $- 6$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} (\frac{- 240}{7 \cdot 7} - (- \frac{47}{7} \cdot \frac{11}{21})) - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.3.2.1.4

Kalikan $7$ dengan $7$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} (\frac{- 240}{49} - (- \frac{47}{7} \cdot \frac{11}{21})) - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.3.2.1.5

Pindahkan tanda negatif di depan pecahan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} (- \frac{240}{49} - (- \frac{47}{7} \cdot \frac{11}{21})) - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.3.2.1.6

Kalikan $- \frac{47}{7} \cdot \frac{11}{21}$ .

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Langkah 5.3.2.1.6.1

Kalikan $\frac{11}{21}$ dengan $\frac{47}{7}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} (- \frac{240}{49} - - \frac{11 \cdot 47}{21 \cdot 7}) - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.3.2.1.6.2

Kalikan $11$ dengan $47$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} (- \frac{240}{49} - - \frac{517}{21 \cdot 7}) - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.3.2.1.6.3

Kalikan $21$ dengan $7$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} (- \frac{240}{49} - - \frac{517}{147}) - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.3.2.1.7

Kalikan $- - \frac{517}{147}$ .

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Langkah 5.3.2.1.7.1

Kalikan $- 1$ dengan $- 1$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} (- \frac{240}{49} + 1 (\frac{517}{147})) - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.3.2.1.7.2

Kalikan $\frac{517}{147}$ dengan $1$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} (- \frac{240}{49} + \frac{517}{147}) - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.3.2.2

Untuk menuliskan $- \frac{240}{49}$ sebagai pecahan dengan penyebut umum, kalikan dengan $\frac{3}{3}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} (- \frac{240}{49} \cdot \frac{3}{3} + \frac{517}{147}) - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.3.2.3

Tulis setiap pernyataan menggunakan penyebut umum dari $147$ , dengan mengalikan masing-masing pembilang dan penyebut dengan faktor dari $1$ yang sesuai.

Ketuk untuk lebih banyak langkah...

Langkah 5.3.2.3.1

Kalikan $\frac{240}{49}$ dengan $\frac{3}{3}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} (- \frac{240 \cdot 3}{49 \cdot 3} + \frac{517}{147}) - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.3.2.3.2

Kalikan $49$ dengan $3$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} (- \frac{240 \cdot 3}{147} + \frac{517}{147}) - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.3.2.4

Gabungkan pembilang dari penyebut persekutuan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} \cdot \frac{- 240 \cdot 3 + 517}{147} - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.3.2.5

Sederhanakan pembilangnya.

Ketuk untuk lebih banyak langkah...

Langkah 5.3.2.5.1

Kalikan $- 240$ dengan $3$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} \cdot \frac{- 720 + 517}{147} - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.3.2.5.2

Tambahkan $- 720$ dan $517$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} \cdot \frac{- 203}{147} - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.3.2.6

Hapus faktor persekutuan dari $- 203$ dan $147$ .

Ketuk untuk lebih banyak langkah...

Langkah 5.3.2.6.1

Faktorkan $7$ dari $- 203$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} \cdot \frac{7 (- 29)}{147} - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.3.2.6.2

Batalkan faktor persekutuan.

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Langkah 5.3.2.6.2.1

Faktorkan $7$ dari $147$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} \cdot \frac{7 \cdot - 29}{7 \cdot 21} - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.3.2.6.2.2

Batalkan faktor persekutuan.

Langkah 5.3.2.6.2.3

Tulis kembali pernyataannya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} \cdot \frac{- 29}{21} - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.3.2.7

Pindahkan tanda negatif di depan pecahan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} (- \frac{29}{21}) - \frac{3}{7} | \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |)$

Langkah 5.4

Evaluasi $| \begin{array}{c} \frac{40}{21} & - \frac{2}{7} \\ - \frac{47}{7} & \frac{6}{7} \end{array} |$ .

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Langkah 5.4.1

Determinan dari matriks $2 \times 2$ dapat dicari menggunakan rumus $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} (- \frac{29}{21}) - \frac{3}{7} (\frac{40}{21} \cdot \frac{6}{7} - (- \frac{47}{7} (- \frac{2}{7}))))$

Langkah 5.4.2

Sederhanakan determinannya.

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Langkah 5.4.2.1

Sederhanakan setiap suku.

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Langkah 5.4.2.1.1

Batalkan faktor persekutuan dari $3$ .

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Langkah 5.4.2.1.1.1

Faktorkan $3$ dari $21$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} (- \frac{29}{21}) - \frac{3}{7} (\frac{40}{3 (7)} \cdot \frac{6}{7} - (- \frac{47}{7} (- \frac{2}{7}))))$

Langkah 5.4.2.1.1.2

Faktorkan $3$ dari $6$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} (- \frac{29}{21}) - \frac{3}{7} (\frac{40}{3 \cdot 7} \cdot \frac{3 \cdot 2}{7} - (- \frac{47}{7} (- \frac{2}{7}))))$

Langkah 5.4.2.1.1.3

Batalkan faktor persekutuan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} (- \frac{29}{21}) - \frac{3}{7} (\frac{40}{3 \cdot 7} \cdot \frac{3 \cdot 2}{7} - (- \frac{47}{7} (- \frac{2}{7}))))$

Langkah 5.4.2.1.1.4

Tulis kembali pernyataannya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} (- \frac{29}{21}) - \frac{3}{7} (\frac{40}{7} \cdot \frac{2}{7} - (- \frac{47}{7} (- \frac{2}{7}))))$

Langkah 5.4.2.1.2

Kalikan $\frac{40}{7}$ dengan $\frac{2}{7}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} (- \frac{29}{21}) - \frac{3}{7} (\frac{40 \cdot 2}{7 \cdot 7} - (- \frac{47}{7} (- \frac{2}{7}))))$

Langkah 5.4.2.1.3

Kalikan $40$ dengan $2$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} (- \frac{29}{21}) - \frac{3}{7} (\frac{80}{7 \cdot 7} - (- \frac{47}{7} (- \frac{2}{7}))))$

Langkah 5.4.2.1.4

Kalikan $7$ dengan $7$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} (- \frac{29}{21}) - \frac{3}{7} (\frac{80}{49} - (- \frac{47}{7} (- \frac{2}{7}))))$

Langkah 5.4.2.1.5

Kalikan $- \frac{47}{7} (- \frac{2}{7})$ .

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Langkah 5.4.2.1.5.1

Kalikan $- 1$ dengan $- 1$ .

Langkah 5.4.2.1.5.2

Kalikan $\frac{47}{7}$ dengan $1$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{9}{7} \cdot \frac{2}{7} - \frac{1}{7} (- \frac{29}{21}) - \frac{3}{7} (\frac{80}{49} - (\frac{47}{7} \cdot \frac{2}{7})))$

Langkah 5.4.2.1.5.3

Kalikan $\frac{47}{7}$ dengan $\frac{2}{7}$ .

Langkah 5.4.2.1.5.4

Kalikan $47$ dengan $2$ .

Langkah 5.4.2.1.5.5

Kalikan $7$ dengan $7$ .

Langkah 5.4.2.2

Gabungkan pembilang dari penyebut persekutuan.

Langkah 5.4.2.3

Kurangi $94$ dengan $80$ .

Langkah 5.4.2.4

Hapus faktor persekutuan dari $- 14$ dan $49$ .

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Langkah 5.4.2.4.1

Faktorkan $7$ dari $- 14$ .

Langkah 5.4.2.4.2

Batalkan faktor persekutuan.

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Langkah 5.4.2.4.2.1

Faktorkan $7$ dari $49$ .

Langkah 5.4.2.4.2.2

Batalkan faktor persekutuan.

Langkah 5.4.2.4.2.3

Tulis kembali pernyataannya.

Langkah 5.4.2.5

Pindahkan tanda negatif di depan pecahan.

Langkah 5.5

Sederhanakan determinannya.

Ketuk untuk lebih banyak langkah...

Langkah 5.5.1

Sederhanakan setiap suku.

Ketuk untuk lebih banyak langkah...

Langkah 5.5.1.1

Kalikan $- \frac{9}{7} \cdot \frac{2}{7}$ .

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Langkah 5.5.1.1.1

Kalikan $\frac{2}{7}$ dengan $\frac{9}{7}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{2 \cdot 9}{7 \cdot 7} - \frac{1}{7} (- \frac{29}{21}) - \frac{3}{7} (- \frac{2}{7}))$

Langkah 5.5.1.1.2

Kalikan $2$ dengan $9$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{18}{7 \cdot 7} - \frac{1}{7} (- \frac{29}{21}) - \frac{3}{7} (- \frac{2}{7}))$

Langkah 5.5.1.1.3

Kalikan $7$ dengan $7$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{18}{49} - \frac{1}{7} (- \frac{29}{21}) - \frac{3}{7} (- \frac{2}{7}))$

Langkah 5.5.1.2

Kalikan $- \frac{1}{7} (- \frac{29}{21})$ .

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Langkah 5.5.1.2.1

Kalikan $- 1$ dengan $- 1$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{18}{49} + 1 (\frac{1}{7}) \frac{29}{21} - \frac{3}{7} (- \frac{2}{7}))$

Langkah 5.5.1.2.2

Kalikan $\frac{1}{7}$ dengan $1$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{18}{49} + \frac{1}{7} \cdot \frac{29}{21} - \frac{3}{7} (- \frac{2}{7}))$

Langkah 5.5.1.2.3

Kalikan $\frac{1}{7}$ dengan $\frac{29}{21}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{18}{49} + \frac{29}{7 \cdot 21} - \frac{3}{7} (- \frac{2}{7}))$

Langkah 5.5.1.2.4

Kalikan $7$ dengan $21$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{18}{49} + \frac{29}{147} - \frac{3}{7} (- \frac{2}{7}))$

Langkah 5.5.1.3

Kalikan $- \frac{3}{7} (- \frac{2}{7})$ .

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Langkah 5.5.1.3.1

Kalikan $- 1$ dengan $- 1$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{18}{49} + \frac{29}{147} + 1 (\frac{3}{7}) \frac{2}{7})$

Langkah 5.5.1.3.2

Kalikan $\frac{3}{7}$ dengan $1$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{18}{49} + \frac{29}{147} + \frac{3}{7} \cdot \frac{2}{7})$

Langkah 5.5.1.3.3

Kalikan $\frac{3}{7}$ dengan $\frac{2}{7}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{18}{49} + \frac{29}{147} + \frac{3 \cdot 2}{7 \cdot 7})$

Langkah 5.5.1.3.4

Kalikan $3$ dengan $2$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{18}{49} + \frac{29}{147} + \frac{6}{7 \cdot 7})$

Langkah 5.5.1.3.5

Kalikan $7$ dengan $7$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{18}{49} + \frac{29}{147} + \frac{6}{49})$

Langkah 5.5.2

Gabungkan pembilang dari penyebut persekutuan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (\frac{- 18 + 6}{49} + \frac{29}{147})$

Langkah 5.5.3

Tambahkan $- 18$ dan $6$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (\frac{- 12}{49} + \frac{29}{147})$

Langkah 5.5.4

Pindahkan tanda negatif di depan pecahan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{12}{49} + \frac{29}{147})$

Langkah 5.5.5

Untuk menuliskan $- \frac{12}{49}$ sebagai pecahan dengan penyebut umum, kalikan dengan $\frac{3}{3}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{12}{49} \cdot \frac{3}{3} + \frac{29}{147})$

Langkah 5.5.6

Tulis setiap pernyataan menggunakan penyebut umum dari $147$ , dengan mengalikan masing-masing pembilang dan penyebut dengan faktor dari $1$ yang sesuai.

Ketuk untuk lebih banyak langkah...

Langkah 5.5.6.1

Kalikan $\frac{12}{49}$ dengan $\frac{3}{3}$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{12 \cdot 3}{49 \cdot 3} + \frac{29}{147})$

Langkah 5.5.6.2

Kalikan $49$ dengan $3$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{12 \cdot 3}{147} + \frac{29}{147})$

Langkah 5.5.7

Gabungkan pembilang dari penyebut persekutuan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} \cdot \frac{- 12 \cdot 3 + 29}{147}$

Langkah 5.5.8

Sederhanakan pembilangnya.

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Langkah 5.5.8.1

Kalikan $- 12$ dengan $3$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} \cdot \frac{- 36 + 29}{147}$

Langkah 5.5.8.2

Tambahkan $- 36$ dan $29$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} \cdot \frac{- 7}{147}$

Langkah 5.5.9

Hapus faktor persekutuan dari $- 7$ dan $147$ .

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Langkah 5.5.9.1

Faktorkan $7$ dari $- 7$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} \cdot \frac{7 (- 1)}{147}$

Langkah 5.5.9.2

Batalkan faktor persekutuan.

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Langkah 5.5.9.2.1

Faktorkan $7$ dari $147$ .

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} \cdot \frac{7 \cdot - 1}{7 \cdot 21}$

Langkah 5.5.9.2.2

Batalkan faktor persekutuan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} \cdot \frac{7 \cdot - 1}{7 \cdot 21}$

Langkah 5.5.9.2.3

Tulis kembali pernyataannya.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} \cdot \frac{- 1}{21}$

Langkah 5.5.10

Pindahkan tanda negatif di depan pecahan.

$- \frac{4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{1}{21})$

Langkah 6

Sederhanakan determinannya.

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Langkah 6.1

Sederhanakan setiap suku.

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Langkah 6.1.1

Batalkan faktor persekutuan dari $2$ .

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Langkah 6.1.1.1

Pindahkan negatif pertama pada $- \frac{4}{7}$ ke dalam pembilangnya.

$\frac{- 4}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{1}{21})$

Langkah 6.1.1.2

Faktorkan $2$ dari $- 4$ .

$\frac{2 (- 2)}{7} \cdot \frac{1}{42} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{1}{21})$

Langkah 6.1.1.3

Faktorkan $2$ dari $42$ .

$\frac{2 \cdot - 2}{7} \cdot \frac{1}{2 \cdot 21} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{1}{21})$

Langkah 6.1.1.4

Batalkan faktor persekutuan.

$\frac{2 \cdot - 2}{7} \cdot \frac{1}{2 \cdot 21} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{1}{21})$

Langkah 6.1.1.5

Tulis kembali pernyataannya.

$\frac{- 2}{7} \cdot \frac{1}{21} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{1}{21})$

Langkah 6.1.2

Kalikan $\frac{- 2}{7}$ dengan $\frac{1}{21}$ .

$\frac{- 2}{7 \cdot 21} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{1}{21})$

Langkah 6.1.3

Kalikan $7$ dengan $21$ .

$\frac{- 2}{147} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{1}{21})$

Langkah 6.1.4

Pindahkan tanda negatif di depan pecahan.

$- \frac{2}{147} - \frac{2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{1}{21})$

Langkah 6.1.5

Batalkan faktor persekutuan dari $2$ .

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Langkah 6.1.5.1

Pindahkan negatif pertama pada $- \frac{2}{7}$ ke dalam pembilangnya.

$- \frac{2}{147} + \frac{- 2}{7} (- \frac{5}{42}) + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{1}{21})$

Langkah 6.1.5.2

Pindahkan negatif pertama pada $- \frac{5}{42}$ ke dalam pembilangnya.

$- \frac{2}{147} + \frac{- 2}{7} \cdot \frac{- 5}{42} + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{1}{21})$

Langkah 6.1.5.3

Faktorkan $2$ dari $- 2$ .

$- \frac{2}{147} + \frac{2 (- 1)}{7} \cdot \frac{- 5}{42} + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{1}{21})$

Langkah 6.1.5.4

Faktorkan $2$ dari $42$ .

$- \frac{2}{147} + \frac{2 \cdot - 1}{7} \cdot \frac{- 5}{2 \cdot 21} + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{1}{21})$

Langkah 6.1.5.5

Batalkan faktor persekutuan.

$- \frac{2}{147} + \frac{2 \cdot - 1}{7} \cdot \frac{- 5}{2 \cdot 21} + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{1}{21})$

Langkah 6.1.5.6

Tulis kembali pernyataannya.

$- \frac{2}{147} + \frac{- 1}{7} \cdot \frac{- 5}{21} + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{1}{21})$

Langkah 6.1.6

Kalikan $\frac{- 1}{7}$ dengan $\frac{- 5}{21}$ .

$- \frac{2}{147} + \frac{- - 5}{7 \cdot 21} + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{1}{21})$

Langkah 6.1.7

Kalikan $- 1$ dengan $- 5$ .

$- \frac{2}{147} + \frac{5}{7 \cdot 21} + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{1}{21})$

Langkah 6.1.8

Kalikan $7$ dengan $21$ .

$- \frac{2}{147} + \frac{5}{147} + \frac{1}{7} (- \frac{1}{42}) - \frac{1}{7} (- \frac{1}{21})$

Langkah 6.1.9

Kalikan $\frac{1}{7} (- \frac{1}{42})$ .

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Langkah 6.1.9.1

Kalikan $\frac{1}{7}$ dengan $\frac{1}{42}$ .

$- \frac{2}{147} + \frac{5}{147} - \frac{1}{7 \cdot 42} - \frac{1}{7} (- \frac{1}{21})$

Langkah 6.1.9.2

Kalikan $7$ dengan $42$ .

$- \frac{2}{147} + \frac{5}{147} - \frac{1}{294} - \frac{1}{7} (- \frac{1}{21})$

Langkah 6.1.10

Kalikan $- \frac{1}{7} (- \frac{1}{21})$ .

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Langkah 6.1.10.1

Kalikan $- 1$ dengan $- 1$ .

$- \frac{2}{147} + \frac{5}{147} - \frac{1}{294} + 1 (\frac{1}{7}) \frac{1}{21}$

Langkah 6.1.10.2

Kalikan $\frac{1}{7}$ dengan $1$ .

$- \frac{2}{147} + \frac{5}{147} - \frac{1}{294} + \frac{1}{7} \cdot \frac{1}{21}$

Langkah 6.1.10.3

Kalikan $\frac{1}{7}$ dengan $\frac{1}{21}$ .

$- \frac{2}{147} + \frac{5}{147} - \frac{1}{294} + \frac{1}{7 \cdot 21}$

Langkah 6.1.10.4

Kalikan $7$ dengan $21$ .

$- \frac{2}{147} + \frac{5}{147} - \frac{1}{294} + \frac{1}{147}$

Langkah 6.2

Gabungkan pembilang dari penyebut persekutuan.

$\frac{- 2 + 5 + 1}{147} + \frac{- 1}{294}$

Langkah 6.3

Tambahkan $- 2$ dan $5$ .

$\frac{3 + 1}{147} + \frac{- 1}{294}$

Langkah 6.4

Tambahkan $3$ dan $1$ .

$\frac{4}{147} + \frac{- 1}{294}$

Langkah 6.5

Pindahkan tanda negatif di depan pecahan.

$\frac{4}{147} - \frac{1}{294}$

Langkah 6.6

Untuk menuliskan $\frac{4}{147}$ sebagai pecahan dengan penyebut umum, kalikan dengan $\frac{2}{2}$ .

$\frac{4}{147} \cdot \frac{2}{2} - \frac{1}{294}$

Langkah 6.7

Tulis setiap pernyataan menggunakan penyebut umum dari $294$ , dengan mengalikan masing-masing pembilang dan penyebut dengan faktor dari $1$ yang sesuai.

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Langkah 6.7.1

Kalikan $\frac{4}{147}$ dengan $\frac{2}{2}$ .

$\frac{4 \cdot 2}{147 \cdot 2} - \frac{1}{294}$

Langkah 6.7.2

Kalikan $147$ dengan $2$ .

$\frac{4 \cdot 2}{294} - \frac{1}{294}$

Langkah 6.8

Gabungkan pembilang dari penyebut persekutuan.

$\frac{4 \cdot 2 - 1}{294}$

Langkah 6.9

Sederhanakan pembilangnya.

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Langkah 6.9.1

Kalikan $4$ dengan $2$ .

$\frac{8 - 1}{294}$

Langkah 6.9.2

Kurangi $1$ dengan $8$ .

$\frac{7}{294}$

Langkah 6.10

Hapus faktor persekutuan dari $7$ dan $294$ .

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Langkah 6.10.1

Faktorkan $7$ dari $7$ .

$\frac{7 (1)}{294}$

Langkah 6.10.2

Batalkan faktor persekutuan.

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Langkah 6.10.2.1

Faktorkan $7$ dari $294$ .

$\frac{7 \cdot 1}{7 \cdot 42}$

Langkah 6.10.2.2

Batalkan faktor persekutuan.

$\frac{7 \cdot 1}{7 \cdot 42}$

Langkah 6.10.2.3

Tulis kembali pernyataannya.

$\frac{1}{42}$