Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 3 - Equations and Problem Solving - 3.2 - Equations and Problem Solving - Problem Set 3.2: 47

Answer

t = $\frac{A}{Pr}$ - $\frac{1}{r}$

Work Step by Step

Using the properties of equality we obtain: $A = P + Prt $ Subtract P from both sides $A - P = Prt $ Divide both sides by Pr $\frac{A}{Pr}$ - $\frac{P}{Pr}$ = $\frac{Prt}{Pr}$ $\frac{A}{Pr}$ - $\frac{1}{r}$ = t
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