Linear Algebra Examples

$2 [\begin{array}{c} \frac{1}{2} & - \frac{1}{2} \\ - \frac{1}{2} & \frac{1}{2} \end{array}] + 4 [\begin{array}{c} \frac{1}{2} & \frac{1}{2} \\ \frac{1}{2} & \frac{1}{2} \end{array}]$

Step 1

Simplify each term.

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Step 1.1

Multiply $2$ by each element of the matrix.

$[\begin{array}{c} 2 (\frac{1}{2}) & 2 (- \frac{1}{2}) \\ 2 (- \frac{1}{2}) & 2 (\frac{1}{2}) \end{array}] + 4 [\begin{array}{c} \frac{1}{2} & \frac{1}{2} \\ \frac{1}{2} & \frac{1}{2} \end{array}]$

Step 1.2

Simplify each element in the matrix.

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Step 1.2.1

Cancel the common factor of $2$ .

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Step 1.2.1.1

Cancel the common factor.

$[\begin{array}{c} 2 (\frac{1}{2}) & 2 (- \frac{1}{2}) \\ 2 (- \frac{1}{2}) & 2 (\frac{1}{2}) \end{array}] + 4 [\begin{array}{c} \frac{1}{2} & \frac{1}{2} \\ \frac{1}{2} & \frac{1}{2} \end{array}]$

Step 1.2.1.2

Rewrite the expression.

$[\begin{array}{c} 1 & 2 (- \frac{1}{2}) \\ 2 (- \frac{1}{2}) & 2 (\frac{1}{2}) \end{array}] + 4 [\begin{array}{c} \frac{1}{2} & \frac{1}{2} \\ \frac{1}{2} & \frac{1}{2} \end{array}]$

Step 1.2.2

Cancel the common factor of $2$ .

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Step 1.2.2.1

Move the leading negative in $- \frac{1}{2}$ into the numerator.

$[\begin{array}{c} 1 & 2 (\frac{- 1}{2}) \\ 2 (- \frac{1}{2}) & 2 (\frac{1}{2}) \end{array}] + 4 [\begin{array}{c} \frac{1}{2} & \frac{1}{2} \\ \frac{1}{2} & \frac{1}{2} \end{array}]$

Step 1.2.2.2

Cancel the common factor.

$[\begin{array}{c} 1 & 2 (\frac{- 1}{2}) \\ 2 (- \frac{1}{2}) & 2 (\frac{1}{2}) \end{array}] + 4 [\begin{array}{c} \frac{1}{2} & \frac{1}{2} \\ \frac{1}{2} & \frac{1}{2} \end{array}]$

Step 1.2.2.3

Rewrite the expression.

$[\begin{array}{c} 1 & - 1 \\ 2 (- \frac{1}{2}) & 2 (\frac{1}{2}) \end{array}] + 4 [\begin{array}{c} \frac{1}{2} & \frac{1}{2} \\ \frac{1}{2} & \frac{1}{2} \end{array}]$

Step 1.2.3

Cancel the common factor of $2$ .

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Step 1.2.3.1

Move the leading negative in $- \frac{1}{2}$ into the numerator.

$[\begin{array}{c} 1 & - 1 \\ 2 (\frac{- 1}{2}) & 2 (\frac{1}{2}) \end{array}] + 4 [\begin{array}{c} \frac{1}{2} & \frac{1}{2} \\ \frac{1}{2} & \frac{1}{2} \end{array}]$

Step 1.2.3.2

Cancel the common factor.

$[\begin{array}{c} 1 & - 1 \\ 2 (\frac{- 1}{2}) & 2 (\frac{1}{2}) \end{array}] + 4 [\begin{array}{c} \frac{1}{2} & \frac{1}{2} \\ \frac{1}{2} & \frac{1}{2} \end{array}]$

Step 1.2.3.3

Rewrite the expression.

$[\begin{array}{c} 1 & - 1 \\ - 1 & 2 (\frac{1}{2}) \end{array}] + 4 [\begin{array}{c} \frac{1}{2} & \frac{1}{2} \\ \frac{1}{2} & \frac{1}{2} \end{array}]$

Step 1.2.4

Cancel the common factor of $2$ .

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Step 1.2.4.1

Cancel the common factor.

$[\begin{array}{c} 1 & - 1 \\ - 1 & 2 (\frac{1}{2}) \end{array}] + 4 [\begin{array}{c} \frac{1}{2} & \frac{1}{2} \\ \frac{1}{2} & \frac{1}{2} \end{array}]$

Step 1.2.4.2

Rewrite the expression.

$[\begin{array}{c} 1 & - 1 \\ - 1 & 1 \end{array}] + 4 [\begin{array}{c} \frac{1}{2} & \frac{1}{2} \\ \frac{1}{2} & \frac{1}{2} \end{array}]$

Step 1.3

Multiply $4$ by each element of the matrix.

$[\begin{array}{c} 1 & - 1 \\ - 1 & 1 \end{array}] + [\begin{array}{c} 4 (\frac{1}{2}) & 4 (\frac{1}{2}) \\ 4 (\frac{1}{2}) & 4 (\frac{1}{2}) \end{array}]$

Step 1.4

Simplify each element in the matrix.

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Step 1.4.1

Cancel the common factor of $2$ .

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Step 1.4.1.1

Factor $2$ out of $4$ .

$[\begin{array}{c} 1 & - 1 \\ - 1 & 1 \end{array}] + [\begin{array}{c} 2 (2) \frac{1}{2} & 4 (\frac{1}{2}) \\ 4 (\frac{1}{2}) & 4 (\frac{1}{2}) \end{array}]$

Step 1.4.1.2

Cancel the common factor.

$[\begin{array}{c} 1 & - 1 \\ - 1 & 1 \end{array}] + [\begin{array}{c} 2 \cdot 2 \frac{1}{2} & 4 (\frac{1}{2}) \\ 4 (\frac{1}{2}) & 4 (\frac{1}{2}) \end{array}]$

Step 1.4.1.3

Rewrite the expression.

$[\begin{array}{c} 1 & - 1 \\ - 1 & 1 \end{array}] + [\begin{array}{c} 2 & 4 (\frac{1}{2}) \\ 4 (\frac{1}{2}) & 4 (\frac{1}{2}) \end{array}]$

Step 1.4.2

Cancel the common factor of $2$ .

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Step 1.4.2.1

Factor $2$ out of $4$ .

$[\begin{array}{c} 1 & - 1 \\ - 1 & 1 \end{array}] + [\begin{array}{c} 2 & 2 (2) \frac{1}{2} \\ 4 (\frac{1}{2}) & 4 (\frac{1}{2}) \end{array}]$

Step 1.4.2.2

Cancel the common factor.

$[\begin{array}{c} 1 & - 1 \\ - 1 & 1 \end{array}] + [\begin{array}{c} 2 & 2 \cdot 2 \frac{1}{2} \\ 4 (\frac{1}{2}) & 4 (\frac{1}{2}) \end{array}]$

Step 1.4.2.3

Rewrite the expression.

$[\begin{array}{c} 1 & - 1 \\ - 1 & 1 \end{array}] + [\begin{array}{c} 2 & 2 \\ 4 (\frac{1}{2}) & 4 (\frac{1}{2}) \end{array}]$

Step 1.4.3

Cancel the common factor of $2$ .

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Step 1.4.3.1

Factor $2$ out of $4$ .

$[\begin{array}{c} 1 & - 1 \\ - 1 & 1 \end{array}] + [\begin{array}{c} 2 & 2 \\ 2 (2) \frac{1}{2} & 4 (\frac{1}{2}) \end{array}]$

Step 1.4.3.2

Cancel the common factor.

$[\begin{array}{c} 1 & - 1 \\ - 1 & 1 \end{array}] + [\begin{array}{c} 2 & 2 \\ 2 \cdot 2 \frac{1}{2} & 4 (\frac{1}{2}) \end{array}]$

Step 1.4.3.3

Rewrite the expression.

$[\begin{array}{c} 1 & - 1 \\ - 1 & 1 \end{array}] + [\begin{array}{c} 2 & 2 \\ 2 & 4 (\frac{1}{2}) \end{array}]$

Step 1.4.4

Cancel the common factor of $2$ .

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Step 1.4.4.1

Factor $2$ out of $4$ .

$[\begin{array}{c} 1 & - 1 \\ - 1 & 1 \end{array}] + [\begin{array}{c} 2 & 2 \\ 2 & 2 (2) \frac{1}{2} \end{array}]$

Step 1.4.4.2

Cancel the common factor.

$[\begin{array}{c} 1 & - 1 \\ - 1 & 1 \end{array}] + [\begin{array}{c} 2 & 2 \\ 2 & 2 \cdot 2 \frac{1}{2} \end{array}]$

Step 1.4.4.3

Rewrite the expression.

$[\begin{array}{c} 1 & - 1 \\ - 1 & 1 \end{array}] + [\begin{array}{c} 2 & 2 \\ 2 & 2 \end{array}]$

Step 2

Add the corresponding elements.

$[\begin{array}{c} 1 + 2 & - 1 + 2 \\ - 1 + 2 & 1 + 2 \end{array}]$

Step 3

Simplify each element.

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Step 3.1

Add $1$ and $2$ .

$[\begin{array}{c} 3 & - 1 + 2 \\ - 1 + 2 & 1 + 2 \end{array}]$

Step 3.2

Add $- 1$ and $2$ .

$[\begin{array}{c} 3 & 1 \\ - 1 + 2 & 1 + 2 \end{array}]$

Step 3.3

Add $- 1$ and $2$ .

$[\begin{array}{c} 3 & 1 \\ 1 & 1 + 2 \end{array}]$

Step 3.4

Add $1$ and $2$ .

$[\begin{array}{c} 3 & 1 \\ 1 & 3 \end{array}]$