Elementary Algebra

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

Chapter 2 - Real Numbers - 2.2 - Addition and Subtraction of Rational Numbers - Problem Set 2.2 - Page 58: 88



Work Step by Step

We first apply the distributive property. Then, we simplify the resultant expression: $\frac{2}{5}n-\frac{7}{10}n+\frac{8}{15}n$ =$n(\frac{2}{5}-\frac{7}{10}+\frac{8}{15})$ =$n(\frac{2(6)-7(3)+8(2)}{30})$ =$n(\frac{12-21+16}{30})$ =$n(\frac{-9+16}{30})$ =$n(\frac{7}{30})$ =$\frac{7}{30}n$
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