# Question #8c8ef

Jan 18, 2018

$f = - 36$

#### Explanation:

Begin by subtracting $7$ from both sides:

$\frac{f}{-} 3 + 7 \textcolor{red}{- 7} = 19 \textcolor{red}{- 7}$

$\frac{f}{-} 3 + 0 = 12$

$\frac{f}{-} 3 = 12$

Multiply both sides by $- 3$

$\cancel{\textcolor{red}{- 3}} \textcolor{red}{\times} \frac{f}{\cancel{- 3}} = 12 \textcolor{red}{\times - 3}$

$f = - 36$