# How do you solve 4/5a = -20?

Jul 14, 2018

$a = - 25$

#### Explanation:

To solve for the variable $a$, we have to isolate it (make it by itself). To do so, multiply both sides by $\frac{5}{4}$ so that the $\frac{4}{5}$ multiplied to the $a$ will cancel out:
$\frac{4}{5} a \textcolor{b l u e}{\cdot \frac{5}{4}} = - 20 \textcolor{b l u e}{\cdot \frac{5}{4}}$

Therefore,
$a = - 25$

Hope this helps!