Elementary Algebra

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

Chapter 7 - Algebraic Fractions - 7.3 - Adding and Subtracting Algebraic Fractions - Problem Set 7.3 - Page 292: 61

Answer

$\frac{1}{18y}$

Work Step by Step

By inspection, we see that the LCM of the denominators is $18y$. Therefore, we create a denominator using this LCM and obtain: $\frac{5}{6y}-\frac{7}{9y}$ =$\frac{3(5)-2(7)}{18y}$ =$\frac{15-14}{18y}$ =$\frac{1}{18y}$
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