# How do you solve for t in a=p+prt ?

May 11, 2016

$t = \frac{a - p}{p r}$

#### Explanation:

Rewrite the formula so that the term with t is positive on the left hand side.

Isolate the term, then step by step, isolate the variable you want as the subject.

$p + \textcolor{red}{p r t} = a$

$\textcolor{red}{p r t} = a - p \text{ ""get rid of +p by -p}$

$p r \textcolor{red}{t} = a - p \text{ " " get rid of x pr by ÷ pr}$

$t = \frac{a - p}{p r}$