# How do you solve - 2b + 9= 25?

May 11, 2018

$b = - 8$

#### Explanation:

$- 2 b + 9 = 25$

To solve for $\textcolor{b l u e}{b}$, we have to make it by itself.

To do so, first subtract $\textcolor{b l u e}{9}$ from both sides of the equation:
$- 2 b + 9 \quad \textcolor{b l u e}{- \quad 9} = 25 \quad \textcolor{b l u e}{- \quad 9}$

$- 2 b = 16$

Now divide both sides by $\textcolor{b l u e}{- 2}$:
$\frac{- 2 b}{\textcolor{b l u e}{- 2}} = \frac{16}{\textcolor{b l u e}{- 2}}$

$b = - 8$

Hope this helps!