# How do you solve the equation -5.5a-43.9=77.1?

Jun 5, 2018

$a = 22$

#### Explanation:

$- 5.5 a - 43.9 = 77.1$

To solve for the variable $a$, we have to make it by itself. First, add $\textcolor{b l u e}{43.9}$ to both sides of the equation:
$- 5.5 a - 43.9 \quad \textcolor{b l u e}{+ \quad 43.9} = 77.1 \quad \textcolor{b l u e}{+ \quad 43.9}$

$- 5.5 a = 121$

Divide both sides by $\textcolor{b l u e}{- 5.5}$:
$\frac{- 5.5 a}{\textcolor{b l u e}{- 5.5}} = \frac{121}{\textcolor{b l u e}{- 5.5}}$

Therefore,
$a = 22$

Hope this helps!