Linear Algebra Examples

$[\begin{array}{c} 0 & 1 & 0 & 2 \\ 1 & - 1 & - 2 & 2 \\ 0 & 1 & 3 & - 3 \\ - 2 & 2 & 3 & - 2 \end{array}] + [\begin{array}{c} 0 & - 1 & 0 & - 2 \\ - 1 & 1 & 2 & - 2 \\ 0 & - 1 & - 3 & 3 \\ 2 & - 2 & - 3 & 2 \end{array}] + [\begin{array}{c} 1 & 3 & - 2 & - 1 \\ - 3 & - 12 & 10 & 6 \\ 0 & - 2 & 2 & 1 \\ - 2 & - 6 & 5 & 3 \end{array}]$

Step 1

Add the corresponding elements.

$[\begin{array}{c} 0 + 0 & 1 - 1 & 0 + 0 & 2 - 2 \\ 1 - 1 & - 1 + 1 & - 2 + 2 & 2 - 2 \\ 0 + 0 & 1 - 1 & 3 - 3 & - 3 + 3 \\ - 2 + 2 & 2 - 2 & 3 - 3 & - 2 + 2 \end{array}] + [\begin{array}{c} 1 & 3 & - 2 & - 1 \\ - 3 & - 12 & 10 & 6 \\ 0 & - 2 & 2 & 1 \\ - 2 & - 6 & 5 & 3 \end{array}]$

Step 2

Simplify each element.

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Step 2.1

Add $0$ and $0$ .

$[\begin{array}{c} 0 & 1 - 1 & 0 + 0 & 2 - 2 \\ 1 - 1 & - 1 + 1 & - 2 + 2 & 2 - 2 \\ 0 + 0 & 1 - 1 & 3 - 3 & - 3 + 3 \\ - 2 + 2 & 2 - 2 & 3 - 3 & - 2 + 2 \end{array}] + [\begin{array}{c} 1 & 3 & - 2 & - 1 \\ - 3 & - 12 & 10 & 6 \\ 0 & - 2 & 2 & 1 \\ - 2 & - 6 & 5 & 3 \end{array}]$

Step 2.2

Subtract $1$ from $1$ .

$[\begin{array}{c} 0 & 0 & 0 + 0 & 2 - 2 \\ 1 - 1 & - 1 + 1 & - 2 + 2 & 2 - 2 \\ 0 + 0 & 1 - 1 & 3 - 3 & - 3 + 3 \\ - 2 + 2 & 2 - 2 & 3 - 3 & - 2 + 2 \end{array}] + [\begin{array}{c} 1 & 3 & - 2 & - 1 \\ - 3 & - 12 & 10 & 6 \\ 0 & - 2 & 2 & 1 \\ - 2 & - 6 & 5 & 3 \end{array}]$

Step 2.3

Add $0$ and $0$ .

$[\begin{array}{c} 0 & 0 & 0 & 2 - 2 \\ 1 - 1 & - 1 + 1 & - 2 + 2 & 2 - 2 \\ 0 + 0 & 1 - 1 & 3 - 3 & - 3 + 3 \\ - 2 + 2 & 2 - 2 & 3 - 3 & - 2 + 2 \end{array}] + [\begin{array}{c} 1 & 3 & - 2 & - 1 \\ - 3 & - 12 & 10 & 6 \\ 0 & - 2 & 2 & 1 \\ - 2 & - 6 & 5 & 3 \end{array}]$

Step 2.4

Subtract $2$ from $2$ .

$[\begin{array}{c} 0 & 0 & 0 & 0 \\ 1 - 1 & - 1 + 1 & - 2 + 2 & 2 - 2 \\ 0 + 0 & 1 - 1 & 3 - 3 & - 3 + 3 \\ - 2 + 2 & 2 - 2 & 3 - 3 & - 2 + 2 \end{array}] + [\begin{array}{c} 1 & 3 & - 2 & - 1 \\ - 3 & - 12 & 10 & 6 \\ 0 & - 2 & 2 & 1 \\ - 2 & - 6 & 5 & 3 \end{array}]$

Step 2.5

Subtract $1$ from $1$ .

$[\begin{array}{c} 0 & 0 & 0 & 0 \\ 0 & - 1 + 1 & - 2 + 2 & 2 - 2 \\ 0 + 0 & 1 - 1 & 3 - 3 & - 3 + 3 \\ - 2 + 2 & 2 - 2 & 3 - 3 & - 2 + 2 \end{array}] + [\begin{array}{c} 1 & 3 & - 2 & - 1 \\ - 3 & - 12 & 10 & 6 \\ 0 & - 2 & 2 & 1 \\ - 2 & - 6 & 5 & 3 \end{array}]$

Step 2.6

Add $- 1$ and $1$ .

$[\begin{array}{c} 0 & 0 & 0 & 0 \\ 0 & 0 & - 2 + 2 & 2 - 2 \\ 0 + 0 & 1 - 1 & 3 - 3 & - 3 + 3 \\ - 2 + 2 & 2 - 2 & 3 - 3 & - 2 + 2 \end{array}] + [\begin{array}{c} 1 & 3 & - 2 & - 1 \\ - 3 & - 12 & 10 & 6 \\ 0 & - 2 & 2 & 1 \\ - 2 & - 6 & 5 & 3 \end{array}]$

Step 2.7

Add $- 2$ and $2$ .

$[\begin{array}{c} 0 & 0 & 0 & 0 \\ 0 & 0 & 0 & 2 - 2 \\ 0 + 0 & 1 - 1 & 3 - 3 & - 3 + 3 \\ - 2 + 2 & 2 - 2 & 3 - 3 & - 2 + 2 \end{array}] + [\begin{array}{c} 1 & 3 & - 2 & - 1 \\ - 3 & - 12 & 10 & 6 \\ 0 & - 2 & 2 & 1 \\ - 2 & - 6 & 5 & 3 \end{array}]$

Step 2.8

Subtract $2$ from $2$ .

$[\begin{array}{c} 0 & 0 & 0 & 0 \\ 0 & 0 & 0 & 0 \\ 0 + 0 & 1 - 1 & 3 - 3 & - 3 + 3 \\ - 2 + 2 & 2 - 2 & 3 - 3 & - 2 + 2 \end{array}] + [\begin{array}{c} 1 & 3 & - 2 & - 1 \\ - 3 & - 12 & 10 & 6 \\ 0 & - 2 & 2 & 1 \\ - 2 & - 6 & 5 & 3 \end{array}]$

Step 2.9

Add $0$ and $0$ .

$[\begin{array}{c} 0 & 0 & 0 & 0 \\ 0 & 0 & 0 & 0 \\ 0 & 1 - 1 & 3 - 3 & - 3 + 3 \\ - 2 + 2 & 2 - 2 & 3 - 3 & - 2 + 2 \end{array}] + [\begin{array}{c} 1 & 3 & - 2 & - 1 \\ - 3 & - 12 & 10 & 6 \\ 0 & - 2 & 2 & 1 \\ - 2 & - 6 & 5 & 3 \end{array}]$

Step 2.10

Subtract $1$ from $1$ .

$[\begin{array}{c} 0 & 0 & 0 & 0 \\ 0 & 0 & 0 & 0 \\ 0 & 0 & 3 - 3 & - 3 + 3 \\ - 2 + 2 & 2 - 2 & 3 - 3 & - 2 + 2 \end{array}] + [\begin{array}{c} 1 & 3 & - 2 & - 1 \\ - 3 & - 12 & 10 & 6 \\ 0 & - 2 & 2 & 1 \\ - 2 & - 6 & 5 & 3 \end{array}]$

Step 2.11

Subtract $3$ from $3$ .

$[\begin{array}{c} 0 & 0 & 0 & 0 \\ 0 & 0 & 0 & 0 \\ 0 & 0 & 0 & - 3 + 3 \\ - 2 + 2 & 2 - 2 & 3 - 3 & - 2 + 2 \end{array}] + [\begin{array}{c} 1 & 3 & - 2 & - 1 \\ - 3 & - 12 & 10 & 6 \\ 0 & - 2 & 2 & 1 \\ - 2 & - 6 & 5 & 3 \end{array}]$

Step 2.12

Add $- 3$ and $3$ .

$[\begin{array}{c} 0 & 0 & 0 & 0 \\ 0 & 0 & 0 & 0 \\ 0 & 0 & 0 & 0 \\ - 2 + 2 & 2 - 2 & 3 - 3 & - 2 + 2 \end{array}] + [\begin{array}{c} 1 & 3 & - 2 & - 1 \\ - 3 & - 12 & 10 & 6 \\ 0 & - 2 & 2 & 1 \\ - 2 & - 6 & 5 & 3 \end{array}]$

Step 2.13

Add $- 2$ and $2$ .

$[\begin{array}{c} 0 & 0 & 0 & 0 \\ 0 & 0 & 0 & 0 \\ 0 & 0 & 0 & 0 \\ 0 & 2 - 2 & 3 - 3 & - 2 + 2 \end{array}] + [\begin{array}{c} 1 & 3 & - 2 & - 1 \\ - 3 & - 12 & 10 & 6 \\ 0 & - 2 & 2 & 1 \\ - 2 & - 6 & 5 & 3 \end{array}]$

Step 2.14

Subtract $2$ from $2$ .

$[\begin{array}{c} 0 & 0 & 0 & 0 \\ 0 & 0 & 0 & 0 \\ 0 & 0 & 0 & 0 \\ 0 & 0 & 3 - 3 & - 2 + 2 \end{array}] + [\begin{array}{c} 1 & 3 & - 2 & - 1 \\ - 3 & - 12 & 10 & 6 \\ 0 & - 2 & 2 & 1 \\ - 2 & - 6 & 5 & 3 \end{array}]$

Step 2.15

Subtract $3$ from $3$ .

$[\begin{array}{c} 0 & 0 & 0 & 0 \\ 0 & 0 & 0 & 0 \\ 0 & 0 & 0 & 0 \\ 0 & 0 & 0 & - 2 + 2 \end{array}] + [\begin{array}{c} 1 & 3 & - 2 & - 1 \\ - 3 & - 12 & 10 & 6 \\ 0 & - 2 & 2 & 1 \\ - 2 & - 6 & 5 & 3 \end{array}]$

Step 2.16

Add $- 2$ and $2$ .

$[\begin{array}{c} 0 & 0 & 0 & 0 \\ 0 & 0 & 0 & 0 \\ 0 & 0 & 0 & 0 \\ 0 & 0 & 0 & 0 \end{array}] + [\begin{array}{c} 1 & 3 & - 2 & - 1 \\ - 3 & - 12 & 10 & 6 \\ 0 & - 2 & 2 & 1 \\ - 2 & - 6 & 5 & 3 \end{array}]$

Step 3

Adding any matrix to a null matrix is the matrix itself.

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Step 3.1

Add the corresponding elements.

$[\begin{array}{c} 0 + 1 & 0 + 3 & 0 - 2 & 0 - 1 \\ 0 - 3 & 0 - 12 & 0 + 10 & 0 + 6 \\ 0 + 0 & 0 - 2 & 0 + 2 & 0 + 1 \\ 0 - 2 & 0 - 6 & 0 + 5 & 0 + 3 \end{array}]$

Step 3.2

Simplify each element.

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Step 3.2.1

Add $0$ and $1$ .

$[\begin{array}{c} 1 & 0 + 3 & 0 - 2 & 0 - 1 \\ 0 - 3 & 0 - 12 & 0 + 10 & 0 + 6 \\ 0 + 0 & 0 - 2 & 0 + 2 & 0 + 1 \\ 0 - 2 & 0 - 6 & 0 + 5 & 0 + 3 \end{array}]$

Step 3.2.2

Add $0$ and $3$ .

$[\begin{array}{c} 1 & 3 & 0 - 2 & 0 - 1 \\ 0 - 3 & 0 - 12 & 0 + 10 & 0 + 6 \\ 0 + 0 & 0 - 2 & 0 + 2 & 0 + 1 \\ 0 - 2 & 0 - 6 & 0 + 5 & 0 + 3 \end{array}]$

Step 3.2.3

Subtract $2$ from $0$ .

$[\begin{array}{c} 1 & 3 & - 2 & 0 - 1 \\ 0 - 3 & 0 - 12 & 0 + 10 & 0 + 6 \\ 0 + 0 & 0 - 2 & 0 + 2 & 0 + 1 \\ 0 - 2 & 0 - 6 & 0 + 5 & 0 + 3 \end{array}]$

Step 3.2.4

Subtract $1$ from $0$ .

$[\begin{array}{c} 1 & 3 & - 2 & - 1 \\ 0 - 3 & 0 - 12 & 0 + 10 & 0 + 6 \\ 0 + 0 & 0 - 2 & 0 + 2 & 0 + 1 \\ 0 - 2 & 0 - 6 & 0 + 5 & 0 + 3 \end{array}]$

Step 3.2.5

Subtract $3$ from $0$ .

$[\begin{array}{c} 1 & 3 & - 2 & - 1 \\ - 3 & 0 - 12 & 0 + 10 & 0 + 6 \\ 0 + 0 & 0 - 2 & 0 + 2 & 0 + 1 \\ 0 - 2 & 0 - 6 & 0 + 5 & 0 + 3 \end{array}]$

Step 3.2.6

Subtract $12$ from $0$ .

$[\begin{array}{c} 1 & 3 & - 2 & - 1 \\ - 3 & - 12 & 0 + 10 & 0 + 6 \\ 0 + 0 & 0 - 2 & 0 + 2 & 0 + 1 \\ 0 - 2 & 0 - 6 & 0 + 5 & 0 + 3 \end{array}]$

Step 3.2.7

Add $0$ and $10$ .

$[\begin{array}{c} 1 & 3 & - 2 & - 1 \\ - 3 & - 12 & 10 & 0 + 6 \\ 0 + 0 & 0 - 2 & 0 + 2 & 0 + 1 \\ 0 - 2 & 0 - 6 & 0 + 5 & 0 + 3 \end{array}]$

Step 3.2.8

Add $0$ and $6$ .

$[\begin{array}{c} 1 & 3 & - 2 & - 1 \\ - 3 & - 12 & 10 & 6 \\ 0 + 0 & 0 - 2 & 0 + 2 & 0 + 1 \\ 0 - 2 & 0 - 6 & 0 + 5 & 0 + 3 \end{array}]$

Step 3.2.9

Add $0$ and $0$ .

$[\begin{array}{c} 1 & 3 & - 2 & - 1 \\ - 3 & - 12 & 10 & 6 \\ 0 & 0 - 2 & 0 + 2 & 0 + 1 \\ 0 - 2 & 0 - 6 & 0 + 5 & 0 + 3 \end{array}]$

Step 3.2.10

Subtract $2$ from $0$ .

$[\begin{array}{c} 1 & 3 & - 2 & - 1 \\ - 3 & - 12 & 10 & 6 \\ 0 & - 2 & 0 + 2 & 0 + 1 \\ 0 - 2 & 0 - 6 & 0 + 5 & 0 + 3 \end{array}]$

Step 3.2.11

Add $0$ and $2$ .

$[\begin{array}{c} 1 & 3 & - 2 & - 1 \\ - 3 & - 12 & 10 & 6 \\ 0 & - 2 & 2 & 0 + 1 \\ 0 - 2 & 0 - 6 & 0 + 5 & 0 + 3 \end{array}]$

Step 3.2.12

Add $0$ and $1$ .

$[\begin{array}{c} 1 & 3 & - 2 & - 1 \\ - 3 & - 12 & 10 & 6 \\ 0 & - 2 & 2 & 1 \\ 0 - 2 & 0 - 6 & 0 + 5 & 0 + 3 \end{array}]$

Step 3.2.13

Subtract $2$ from $0$ .

$[\begin{array}{c} 1 & 3 & - 2 & - 1 \\ - 3 & - 12 & 10 & 6 \\ 0 & - 2 & 2 & 1 \\ - 2 & 0 - 6 & 0 + 5 & 0 + 3 \end{array}]$

Step 3.2.14

Subtract $6$ from $0$ .

$[\begin{array}{c} 1 & 3 & - 2 & - 1 \\ - 3 & - 12 & 10 & 6 \\ 0 & - 2 & 2 & 1 \\ - 2 & - 6 & 0 + 5 & 0 + 3 \end{array}]$

Step 3.2.15

Add $0$ and $5$ .

$[\begin{array}{c} 1 & 3 & - 2 & - 1 \\ - 3 & - 12 & 10 & 6 \\ 0 & - 2 & 2 & 1 \\ - 2 & - 6 & 5 & 0 + 3 \end{array}]$

Step 3.2.16

Add $0$ and $3$ .

$[\begin{array}{c} 1 & 3 & - 2 & - 1 \\ - 3 & - 12 & 10 & 6 \\ 0 & - 2 & 2 & 1 \\ - 2 & - 6 & 5 & 3 \end{array}]$