Linear Algebra Examples

$[\begin{array}{c} 1 & 2 & 3 & 4 \\ - 2 & - 3 & - 4 & - 5 \\ 0 & 3 & 2 & 1 \\ - 1 & 2 & - 2 & 0 \end{array}] + [\begin{array}{c} 5 & 7 & - 9 & 4 \\ 0 & 3 & 1 & - 1 \\ 4 & 6 & - 8 & 7 \\ 5 & 0 & 3 & 4 \end{array}]$

Step 1

Add the corresponding elements.

$[\begin{array}{c} 1 + 5 & 2 + 7 & 3 - 9 & 4 + 4 \\ - 2 + 0 & - 3 + 3 & - 4 + 1 & - 5 - 1 \\ 0 + 4 & 3 + 6 & 2 - 8 & 1 + 7 \\ - 1 + 5 & 2 + 0 & - 2 + 3 & 0 + 4 \end{array}]$

Step 2

Simplify each element.

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Step 2.1

Add $1$ and $5$ .

$[\begin{array}{c} 6 & 2 + 7 & 3 - 9 & 4 + 4 \\ - 2 + 0 & - 3 + 3 & - 4 + 1 & - 5 - 1 \\ 0 + 4 & 3 + 6 & 2 - 8 & 1 + 7 \\ - 1 + 5 & 2 + 0 & - 2 + 3 & 0 + 4 \end{array}]$

Step 2.2

Add $2$ and $7$ .

$[\begin{array}{c} 6 & 9 & 3 - 9 & 4 + 4 \\ - 2 + 0 & - 3 + 3 & - 4 + 1 & - 5 - 1 \\ 0 + 4 & 3 + 6 & 2 - 8 & 1 + 7 \\ - 1 + 5 & 2 + 0 & - 2 + 3 & 0 + 4 \end{array}]$

Step 2.3

Subtract $9$ from $3$ .

$[\begin{array}{c} 6 & 9 & - 6 & 4 + 4 \\ - 2 + 0 & - 3 + 3 & - 4 + 1 & - 5 - 1 \\ 0 + 4 & 3 + 6 & 2 - 8 & 1 + 7 \\ - 1 + 5 & 2 + 0 & - 2 + 3 & 0 + 4 \end{array}]$

Step 2.4

Add $4$ and $4$ .

$[\begin{array}{c} 6 & 9 & - 6 & 8 \\ - 2 + 0 & - 3 + 3 & - 4 + 1 & - 5 - 1 \\ 0 + 4 & 3 + 6 & 2 - 8 & 1 + 7 \\ - 1 + 5 & 2 + 0 & - 2 + 3 & 0 + 4 \end{array}]$

Step 2.5

Add $- 2$ and $0$ .

$[\begin{array}{c} 6 & 9 & - 6 & 8 \\ - 2 & - 3 + 3 & - 4 + 1 & - 5 - 1 \\ 0 + 4 & 3 + 6 & 2 - 8 & 1 + 7 \\ - 1 + 5 & 2 + 0 & - 2 + 3 & 0 + 4 \end{array}]$

Step 2.6

Add $- 3$ and $3$ .

$[\begin{array}{c} 6 & 9 & - 6 & 8 \\ - 2 & 0 & - 4 + 1 & - 5 - 1 \\ 0 + 4 & 3 + 6 & 2 - 8 & 1 + 7 \\ - 1 + 5 & 2 + 0 & - 2 + 3 & 0 + 4 \end{array}]$

Step 2.7

Add $- 4$ and $1$ .

$[\begin{array}{c} 6 & 9 & - 6 & 8 \\ - 2 & 0 & - 3 & - 5 - 1 \\ 0 + 4 & 3 + 6 & 2 - 8 & 1 + 7 \\ - 1 + 5 & 2 + 0 & - 2 + 3 & 0 + 4 \end{array}]$

Step 2.8

Subtract $1$ from $- 5$ .

$[\begin{array}{c} 6 & 9 & - 6 & 8 \\ - 2 & 0 & - 3 & - 6 \\ 0 + 4 & 3 + 6 & 2 - 8 & 1 + 7 \\ - 1 + 5 & 2 + 0 & - 2 + 3 & 0 + 4 \end{array}]$

Step 2.9

Add $0$ and $4$ .

$[\begin{array}{c} 6 & 9 & - 6 & 8 \\ - 2 & 0 & - 3 & - 6 \\ 4 & 3 + 6 & 2 - 8 & 1 + 7 \\ - 1 + 5 & 2 + 0 & - 2 + 3 & 0 + 4 \end{array}]$

Step 2.10

Add $3$ and $6$ .

$[\begin{array}{c} 6 & 9 & - 6 & 8 \\ - 2 & 0 & - 3 & - 6 \\ 4 & 9 & 2 - 8 & 1 + 7 \\ - 1 + 5 & 2 + 0 & - 2 + 3 & 0 + 4 \end{array}]$

Step 2.11

Subtract $8$ from $2$ .

$[\begin{array}{c} 6 & 9 & - 6 & 8 \\ - 2 & 0 & - 3 & - 6 \\ 4 & 9 & - 6 & 1 + 7 \\ - 1 + 5 & 2 + 0 & - 2 + 3 & 0 + 4 \end{array}]$

Step 2.12

Add $1$ and $7$ .

$[\begin{array}{c} 6 & 9 & - 6 & 8 \\ - 2 & 0 & - 3 & - 6 \\ 4 & 9 & - 6 & 8 \\ - 1 + 5 & 2 + 0 & - 2 + 3 & 0 + 4 \end{array}]$

Step 2.13

Add $- 1$ and $5$ .

$[\begin{array}{c} 6 & 9 & - 6 & 8 \\ - 2 & 0 & - 3 & - 6 \\ 4 & 9 & - 6 & 8 \\ 4 & 2 + 0 & - 2 + 3 & 0 + 4 \end{array}]$

Step 2.14

Add $2$ and $0$ .

$[\begin{array}{c} 6 & 9 & - 6 & 8 \\ - 2 & 0 & - 3 & - 6 \\ 4 & 9 & - 6 & 8 \\ 4 & 2 & - 2 + 3 & 0 + 4 \end{array}]$

Step 2.15

Add $- 2$ and $3$ .

$[\begin{array}{c} 6 & 9 & - 6 & 8 \\ - 2 & 0 & - 3 & - 6 \\ 4 & 9 & - 6 & 8 \\ 4 & 2 & 1 & 0 + 4 \end{array}]$

Step 2.16

Add $0$ and $4$ .

$[\begin{array}{c} 6 & 9 & - 6 & 8 \\ - 2 & 0 & - 3 & - 6 \\ 4 & 9 & - 6 & 8 \\ 4 & 2 & 1 & 4 \end{array}]$