# How do you solve 18f=-216?

Mar 1, 2017

See the entire solution process below:

#### Explanation:

Divide each side of the equation by $\textcolor{red}{18}$ to solve for $f$ while keeping the equation balanced:

$\frac{18 f}{\textcolor{red}{18}} = - \frac{216}{\textcolor{red}{18}}$

$\frac{\textcolor{red}{\cancel{\textcolor{b l a c k}{18}}} f}{\cancel{\textcolor{red}{18}}} = - 12$

$f = - 12$

Mar 1, 2017

$f = - 12$

#### Explanation:

$18 f = - 216$

divide both sides of the equation by 18

$\frac{18 f}{\textcolor{g r e e n}{18}} = - \frac{216}{\textcolor{g r e e n}{18}}$

18/18 = 1, so we can simplify

$1 f = f = - \frac{216}{18}$

Then divide it out to get the final answer

$f = - 12$