Linear Algebra Examples

$[\begin{array}{c} - 1 \\ 4 \\ 5 \end{array}] - [\begin{array}{c} \frac{55}{42} \\ \frac{395}{84} \\ \frac{167}{84} \end{array}]$

Step 1

Subtract the corresponding elements.

$[\begin{array}{c} - 1 - \frac{55}{42} \\ 4 - \frac{395}{84} \\ 5 - \frac{167}{84} \end{array}]$

Step 2

Simplify each element.

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Step 2.1

To write $- 1$ as a fraction with a common denominator, multiply by $\frac{42}{42}$ .

$[\begin{array}{c} - 1 \cdot \frac{42}{42} - \frac{55}{42} \\ 4 - \frac{395}{84} \\ 5 - \frac{167}{84} \end{array}]$

Step 2.2

Combine $- 1$ and $\frac{42}{42}$ .

$[\begin{array}{c} \frac{- 1 \cdot 42}{42} - \frac{55}{42} \\ 4 - \frac{395}{84} \\ 5 - \frac{167}{84} \end{array}]$

Step 2.3

Combine the numerators over the common denominator.

$[\begin{array}{c} \frac{- 1 \cdot 42 - 55}{42} \\ 4 - \frac{395}{84} \\ 5 - \frac{167}{84} \end{array}]$

Step 2.4

Simplify the numerator.

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Step 2.4.1

Multiply $- 1$ by $42$ .

$[\begin{array}{c} \frac{- 42 - 55}{42} \\ 4 - \frac{395}{84} \\ 5 - \frac{167}{84} \end{array}]$

Step 2.4.2

Subtract $55$ from $- 42$ .

$[\begin{array}{c} \frac{- 97}{42} \\ 4 - \frac{395}{84} \\ 5 - \frac{167}{84} \end{array}]$

Step 2.5

Move the negative in front of the fraction.

$[\begin{array}{c} - \frac{97}{42} \\ 4 - \frac{395}{84} \\ 5 - \frac{167}{84} \end{array}]$

Step 2.6

To write $4$ as a fraction with a common denominator, multiply by $\frac{84}{84}$ .

$[\begin{array}{c} - \frac{97}{42} \\ 4 \cdot \frac{84}{84} - \frac{395}{84} \\ 5 - \frac{167}{84} \end{array}]$

Step 2.7

Combine $4$ and $\frac{84}{84}$ .

$[\begin{array}{c} - \frac{97}{42} \\ \frac{4 \cdot 84}{84} - \frac{395}{84} \\ 5 - \frac{167}{84} \end{array}]$

Step 2.8

Combine the numerators over the common denominator.

$[\begin{array}{c} - \frac{97}{42} \\ \frac{4 \cdot 84 - 395}{84} \\ 5 - \frac{167}{84} \end{array}]$

Step 2.9

Simplify the numerator.

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Step 2.9.1

Multiply $4$ by $84$ .

$[\begin{array}{c} - \frac{97}{42} \\ \frac{336 - 395}{84} \\ 5 - \frac{167}{84} \end{array}]$

Step 2.9.2

Subtract $395$ from $336$ .

$[\begin{array}{c} - \frac{97}{42} \\ \frac{- 59}{84} \\ 5 - \frac{167}{84} \end{array}]$

Step 2.10

Move the negative in front of the fraction.

$[\begin{array}{c} - \frac{97}{42} \\ - \frac{59}{84} \\ 5 - \frac{167}{84} \end{array}]$

Step 2.11

To write $5$ as a fraction with a common denominator, multiply by $\frac{84}{84}$ .

$[\begin{array}{c} - \frac{97}{42} \\ - \frac{59}{84} \\ 5 \cdot \frac{84}{84} - \frac{167}{84} \end{array}]$

Step 2.12

Combine $5$ and $\frac{84}{84}$ .

$[\begin{array}{c} - \frac{97}{42} \\ - \frac{59}{84} \\ \frac{5 \cdot 84}{84} - \frac{167}{84} \end{array}]$

Step 2.13

Combine the numerators over the common denominator.

$[\begin{array}{c} - \frac{97}{42} \\ - \frac{59}{84} \\ \frac{5 \cdot 84 - 167}{84} \end{array}]$

Step 2.14

Simplify the numerator.

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Step 2.14.1

Multiply $5$ by $84$ .

$[\begin{array}{c} - \frac{97}{42} \\ - \frac{59}{84} \\ \frac{420 - 167}{84} \end{array}]$

Step 2.14.2

Subtract $167$ from $420$ .

$[\begin{array}{c} - \frac{97}{42} \\ - \frac{59}{84} \\ \frac{253}{84} \end{array}]$