Evaluate f(5)=3x+2

$f (5) = 3 x + 2$

Divide each term in $f (5) = 3 x + 2$ by $5$ .

$\frac{f \cdot 5}{5} = \frac{3 x}{5} + \frac{2}{5}$

Simplify the left side.

Cancel the common factor of $5$ .

Cancel the common factor.

$\frac{f \cdot 5}{5} = \frac{3 x}{5} + \frac{2}{5}$

Divide $f$ by $1$ .

$f = \frac{3 x}{5} + \frac{2}{5}$