Precalculus Examples

Given $g (x) = - x + 4$ ; find $g (5)$

Step 1

Replace the variable $x$ with $5$ in the expression.

$g (5) = - (5) + 4$

Step 2

Simplify $- (5) + 4$ .

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Step 2.1

Remove parentheses.

$- (5) + 4$

Step 2.2

Multiply $- 1$ by $5$ .

$- 5 + 4$

Step 2.3

Add $- 5$ and $4$ .

$- 1$