# How do you solve 39= - 3x - 6( - x - 3)?

Jul 27, 2018

$x = 7$

#### Explanation:

$39 = - 3 x - 6 \left(- x - 3\right)$

Expand the right side with the distributive property:
$39 = - 3 x + 6 x + 18$

Simplify the right side:
$39 = 3 x + 18$

Subtract $\textcolor{b l u e}{18}$ from both sides:
$39 \quad \textcolor{b l u e}{- \quad 18} = 3 x + 18 \quad \textcolor{b l u e}{- \quad 18}$

$21 = 3 x$

Divide both sides by $\textcolor{b l u e}{3}$:
$\frac{21}{\textcolor{b l u e}{3}} = \frac{3 x}{\textcolor{b l u e}{3}}$

$7 = x$

Therefore,
$x = 7$

Hope this helps!