Elementary Algebra

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

Chapter 2 - Real Numbers - Chapters 1-2 Cumulative Review Problem Set: 18

Answer

79/40

Work Step by Step

We plug in the given values: $$ = \frac{2}{3}\frac{6}{5} - \frac{3}{5}\frac{-1}{4} + \frac{3}{4}\frac{6}{5} - \frac{1}{2}\frac{-1}{4}$$ We now multiply and create a common denominator: $$ = \frac{96}{120} + \frac{18}{120} + \frac{108}{120} + \frac{15}{120} \\ = \frac{79}{40}$$
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