## Intermediate Algebra (6th Edition)

$t=\frac{A-P}{Pr}$
We are given that $A=P(1+rt)$. We can use the distributive property to multiply out the terms on the right side. $A=P(1+rt)=P+Prt$ Subtract P from both sides. $A-P=Prt$ Divide both sides by Pr. $t=\frac{A-P}{Pr}$