Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Chapter 7 - Section 7.6 - Percent and Problem Solving: Interest - Exercise Set: 33



Work Step by Step

$\frac{x}{4}$ +$\frac{x}{5}$ = $\frac{x}{4}$$\times$$\frac{5}{5}$ + $\frac{x}{5}$$\times$$\frac{4}{4}$ =$\frac{5x}{20}$ + $\frac{4x}{20}$ =$\frac{5x+4x}{20}$ =$\frac{9x}{20}$
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