Linear Algebra Examples

$- 6 [\begin{array}{c} 1 \\ 1 \\ 3 \end{array}] + 9 [\begin{array}{c} - 3 \\ 4 \\ - 6 \end{array}] - 15 [\begin{array}{c} 2 \\ - 2 \\ 6 \end{array}]$

Step 1

Simplify each term.

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Step 1.1

Multiply $- 6$ by each element of the matrix.

$[\begin{array}{c} - 6 \cdot 1 \\ - 6 \cdot 1 \\ - 6 \cdot 3 \end{array}] + 9 [\begin{array}{c} - 3 \\ 4 \\ - 6 \end{array}] - 15 [\begin{array}{c} 2 \\ - 2 \\ 6 \end{array}]$

Step 1.2

Simplify each element in the matrix.

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Step 1.2.1

Multiply $- 6$ by $1$ .

$[\begin{array}{c} - 6 \\ - 6 \cdot 1 \\ - 6 \cdot 3 \end{array}] + 9 [\begin{array}{c} - 3 \\ 4 \\ - 6 \end{array}] - 15 [\begin{array}{c} 2 \\ - 2 \\ 6 \end{array}]$

Step 1.2.2

Multiply $- 6$ by $1$ .

$[\begin{array}{c} - 6 \\ - 6 \\ - 6 \cdot 3 \end{array}] + 9 [\begin{array}{c} - 3 \\ 4 \\ - 6 \end{array}] - 15 [\begin{array}{c} 2 \\ - 2 \\ 6 \end{array}]$

Step 1.2.3

Multiply $- 6$ by $3$ .

$[\begin{array}{c} - 6 \\ - 6 \\ - 18 \end{array}] + 9 [\begin{array}{c} - 3 \\ 4 \\ - 6 \end{array}] - 15 [\begin{array}{c} 2 \\ - 2 \\ 6 \end{array}]$

Step 1.3

Multiply $9$ by each element of the matrix.

$[\begin{array}{c} - 6 \\ - 6 \\ - 18 \end{array}] + [\begin{array}{c} 9 \cdot - 3 \\ 9 \cdot 4 \\ 9 \cdot - 6 \end{array}] - 15 [\begin{array}{c} 2 \\ - 2 \\ 6 \end{array}]$

Step 1.4

Simplify each element in the matrix.

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Step 1.4.1

Multiply $9$ by $- 3$ .

$[\begin{array}{c} - 6 \\ - 6 \\ - 18 \end{array}] + [\begin{array}{c} - 27 \\ 9 \cdot 4 \\ 9 \cdot - 6 \end{array}] - 15 [\begin{array}{c} 2 \\ - 2 \\ 6 \end{array}]$

Step 1.4.2

Multiply $9$ by $4$ .

$[\begin{array}{c} - 6 \\ - 6 \\ - 18 \end{array}] + [\begin{array}{c} - 27 \\ 36 \\ 9 \cdot - 6 \end{array}] - 15 [\begin{array}{c} 2 \\ - 2 \\ 6 \end{array}]$

Step 1.4.3

Multiply $9$ by $- 6$ .

$[\begin{array}{c} - 6 \\ - 6 \\ - 18 \end{array}] + [\begin{array}{c} - 27 \\ 36 \\ - 54 \end{array}] - 15 [\begin{array}{c} 2 \\ - 2 \\ 6 \end{array}]$

Step 1.5

Multiply $- 15$ by each element of the matrix.

$[\begin{array}{c} - 6 \\ - 6 \\ - 18 \end{array}] + [\begin{array}{c} - 27 \\ 36 \\ - 54 \end{array}] + [\begin{array}{c} - 15 \cdot 2 \\ - 15 \cdot - 2 \\ - 15 \cdot 6 \end{array}]$

Step 1.6

Simplify each element in the matrix.

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Step 1.6.1

Multiply $- 15$ by $2$ .

$[\begin{array}{c} - 6 \\ - 6 \\ - 18 \end{array}] + [\begin{array}{c} - 27 \\ 36 \\ - 54 \end{array}] + [\begin{array}{c} - 30 \\ - 15 \cdot - 2 \\ - 15 \cdot 6 \end{array}]$

Step 1.6.2

Multiply $- 15$ by $- 2$ .

$[\begin{array}{c} - 6 \\ - 6 \\ - 18 \end{array}] + [\begin{array}{c} - 27 \\ 36 \\ - 54 \end{array}] + [\begin{array}{c} - 30 \\ 30 \\ - 15 \cdot 6 \end{array}]$

Step 1.6.3

Multiply $- 15$ by $6$ .

$[\begin{array}{c} - 6 \\ - 6 \\ - 18 \end{array}] + [\begin{array}{c} - 27 \\ 36 \\ - 54 \end{array}] + [\begin{array}{c} - 30 \\ 30 \\ - 90 \end{array}]$

Step 2

Add the corresponding elements.

$[\begin{array}{c} - 6 - 27 \\ - 6 + 36 \\ - 18 - 54 \end{array}] + [\begin{array}{c} - 30 \\ 30 \\ - 90 \end{array}]$

Step 3

Simplify each element.

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Step 3.1

Subtract $27$ from $- 6$ .

$[\begin{array}{c} - 33 \\ - 6 + 36 \\ - 18 - 54 \end{array}] + [\begin{array}{c} - 30 \\ 30 \\ - 90 \end{array}]$

Step 3.2

Add $- 6$ and $36$ .

$[\begin{array}{c} - 33 \\ 30 \\ - 18 - 54 \end{array}] + [\begin{array}{c} - 30 \\ 30 \\ - 90 \end{array}]$

Step 3.3

Subtract $54$ from $- 18$ .

$[\begin{array}{c} - 33 \\ 30 \\ - 72 \end{array}] + [\begin{array}{c} - 30 \\ 30 \\ - 90 \end{array}]$

Step 4

Add the corresponding elements.

$[\begin{array}{c} - 33 - 30 \\ 30 + 30 \\ - 72 - 90 \end{array}]$

Step 5

Simplify each element.

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Step 5.1

Subtract $30$ from $- 33$ .

$[\begin{array}{c} - 63 \\ 30 + 30 \\ - 72 - 90 \end{array}]$

Step 5.2

Add $30$ and $30$ .

$[\begin{array}{c} - 63 \\ 60 \\ - 72 - 90 \end{array}]$

Step 5.3

Subtract $90$ from $- 72$ .

$[\begin{array}{c} - 63 \\ 60 \\ - 162 \end{array}]$