# How do you solve for a in f=np+a?

Apr 8, 2017

See the entire solution process below:

#### Explanation:

Subtract $\textcolor{red}{n p}$ from each side of the equation to solve for $a$ while keeping the equation balanced:

$f - \textcolor{red}{n p} = n p + a - \textcolor{red}{n p}$

$f - n p = n p - \textcolor{red}{n p} + a$

$f - n p = 0 + a$

$f - n p = a$

$a = f - n p$