Linear Algebra Examples

$- 9 [\begin{array}{c} - 20 & - 15 & 4 & - 1 \\ 1 & 14 & 13 & 9 \\ 20 & 5 & 6 & - 11 \\ 8 & - 2 & - 7 & 10 \end{array}]$

Step 1

Multiply $- 9$ by each element of the matrix.

$[\begin{array}{c} - 9 \cdot - 20 & - 9 \cdot - 15 & - 9 \cdot 4 & - 9 \cdot - 1 \\ - 9 \cdot 1 & - 9 \cdot 14 & - 9 \cdot 13 & - 9 \cdot 9 \\ - 9 \cdot 20 & - 9 \cdot 5 & - 9 \cdot 6 & - 9 \cdot - 11 \\ - 9 \cdot 8 & - 9 \cdot - 2 & - 9 \cdot - 7 & - 9 \cdot 10 \end{array}]$

Step 2

Simplify each element in the matrix.

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Step 2.1

Multiply $- 9$ by $- 20$ .

$[\begin{array}{c} 180 & - 9 \cdot - 15 & - 9 \cdot 4 & - 9 \cdot - 1 \\ - 9 \cdot 1 & - 9 \cdot 14 & - 9 \cdot 13 & - 9 \cdot 9 \\ - 9 \cdot 20 & - 9 \cdot 5 & - 9 \cdot 6 & - 9 \cdot - 11 \\ - 9 \cdot 8 & - 9 \cdot - 2 & - 9 \cdot - 7 & - 9 \cdot 10 \end{array}]$

Step 2.2

Multiply $- 9$ by $- 15$ .

$[\begin{array}{c} 180 & 135 & - 9 \cdot 4 & - 9 \cdot - 1 \\ - 9 \cdot 1 & - 9 \cdot 14 & - 9 \cdot 13 & - 9 \cdot 9 \\ - 9 \cdot 20 & - 9 \cdot 5 & - 9 \cdot 6 & - 9 \cdot - 11 \\ - 9 \cdot 8 & - 9 \cdot - 2 & - 9 \cdot - 7 & - 9 \cdot 10 \end{array}]$

Step 2.3

Multiply $- 9$ by $4$ .

$[\begin{array}{c} 180 & 135 & - 36 & - 9 \cdot - 1 \\ - 9 \cdot 1 & - 9 \cdot 14 & - 9 \cdot 13 & - 9 \cdot 9 \\ - 9 \cdot 20 & - 9 \cdot 5 & - 9 \cdot 6 & - 9 \cdot - 11 \\ - 9 \cdot 8 & - 9 \cdot - 2 & - 9 \cdot - 7 & - 9 \cdot 10 \end{array}]$

Step 2.4

Multiply $- 9$ by $- 1$ .

$[\begin{array}{c} 180 & 135 & - 36 & 9 \\ - 9 \cdot 1 & - 9 \cdot 14 & - 9 \cdot 13 & - 9 \cdot 9 \\ - 9 \cdot 20 & - 9 \cdot 5 & - 9 \cdot 6 & - 9 \cdot - 11 \\ - 9 \cdot 8 & - 9 \cdot - 2 & - 9 \cdot - 7 & - 9 \cdot 10 \end{array}]$

Step 2.5

Multiply $- 9$ by $1$ .

$[\begin{array}{c} 180 & 135 & - 36 & 9 \\ - 9 & - 9 \cdot 14 & - 9 \cdot 13 & - 9 \cdot 9 \\ - 9 \cdot 20 & - 9 \cdot 5 & - 9 \cdot 6 & - 9 \cdot - 11 \\ - 9 \cdot 8 & - 9 \cdot - 2 & - 9 \cdot - 7 & - 9 \cdot 10 \end{array}]$

Step 2.6

Multiply $- 9$ by $14$ .

$[\begin{array}{c} 180 & 135 & - 36 & 9 \\ - 9 & - 126 & - 9 \cdot 13 & - 9 \cdot 9 \\ - 9 \cdot 20 & - 9 \cdot 5 & - 9 \cdot 6 & - 9 \cdot - 11 \\ - 9 \cdot 8 & - 9 \cdot - 2 & - 9 \cdot - 7 & - 9 \cdot 10 \end{array}]$

Step 2.7

Multiply $- 9$ by $13$ .

$[\begin{array}{c} 180 & 135 & - 36 & 9 \\ - 9 & - 126 & - 117 & - 9 \cdot 9 \\ - 9 \cdot 20 & - 9 \cdot 5 & - 9 \cdot 6 & - 9 \cdot - 11 \\ - 9 \cdot 8 & - 9 \cdot - 2 & - 9 \cdot - 7 & - 9 \cdot 10 \end{array}]$

Step 2.8

Multiply $- 9$ by $9$ .

$[\begin{array}{c} 180 & 135 & - 36 & 9 \\ - 9 & - 126 & - 117 & - 81 \\ - 9 \cdot 20 & - 9 \cdot 5 & - 9 \cdot 6 & - 9 \cdot - 11 \\ - 9 \cdot 8 & - 9 \cdot - 2 & - 9 \cdot - 7 & - 9 \cdot 10 \end{array}]$

Step 2.9

Multiply $- 9$ by $20$ .

$[\begin{array}{c} 180 & 135 & - 36 & 9 \\ - 9 & - 126 & - 117 & - 81 \\ - 180 & - 9 \cdot 5 & - 9 \cdot 6 & - 9 \cdot - 11 \\ - 9 \cdot 8 & - 9 \cdot - 2 & - 9 \cdot - 7 & - 9 \cdot 10 \end{array}]$

Step 2.10

Multiply $- 9$ by $5$ .

$[\begin{array}{c} 180 & 135 & - 36 & 9 \\ - 9 & - 126 & - 117 & - 81 \\ - 180 & - 45 & - 9 \cdot 6 & - 9 \cdot - 11 \\ - 9 \cdot 8 & - 9 \cdot - 2 & - 9 \cdot - 7 & - 9 \cdot 10 \end{array}]$

Step 2.11

Multiply $- 9$ by $6$ .

$[\begin{array}{c} 180 & 135 & - 36 & 9 \\ - 9 & - 126 & - 117 & - 81 \\ - 180 & - 45 & - 54 & - 9 \cdot - 11 \\ - 9 \cdot 8 & - 9 \cdot - 2 & - 9 \cdot - 7 & - 9 \cdot 10 \end{array}]$

Step 2.12

Multiply $- 9$ by $- 11$ .

$[\begin{array}{c} 180 & 135 & - 36 & 9 \\ - 9 & - 126 & - 117 & - 81 \\ - 180 & - 45 & - 54 & 99 \\ - 9 \cdot 8 & - 9 \cdot - 2 & - 9 \cdot - 7 & - 9 \cdot 10 \end{array}]$

Step 2.13

Multiply $- 9$ by $8$ .

$[\begin{array}{c} 180 & 135 & - 36 & 9 \\ - 9 & - 126 & - 117 & - 81 \\ - 180 & - 45 & - 54 & 99 \\ - 72 & - 9 \cdot - 2 & - 9 \cdot - 7 & - 9 \cdot 10 \end{array}]$

Step 2.14

Multiply $- 9$ by $- 2$ .

$[\begin{array}{c} 180 & 135 & - 36 & 9 \\ - 9 & - 126 & - 117 & - 81 \\ - 180 & - 45 & - 54 & 99 \\ - 72 & 18 & - 9 \cdot - 7 & - 9 \cdot 10 \end{array}]$

Step 2.15

Multiply $- 9$ by $- 7$ .

$[\begin{array}{c} 180 & 135 & - 36 & 9 \\ - 9 & - 126 & - 117 & - 81 \\ - 180 & - 45 & - 54 & 99 \\ - 72 & 18 & 63 & - 9 \cdot 10 \end{array}]$

Step 2.16

Multiply $- 9$ by $10$ .

$[\begin{array}{c} 180 & 135 & - 36 & 9 \\ - 9 & - 126 & - 117 & - 81 \\ - 180 & - 45 & - 54 & 99 \\ - 72 & 18 & 63 & - 90 \end{array}]$