Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 7 - Section 7.4 - Adding and Subtracting Rational Expressions with Different Denominators - Exercise Set: 2

Answer

$\frac{73}{21a}$

Work Step by Step

$\frac{15}{7a}$+$\frac{8}{6a}$= $\frac{15*6}{7a*6}$+$\frac{8*7}{6a*7}$= $\frac{90}{42a}$+$\frac{56}{42a}$=$\frac{90+56}{42a}$= $\frac{146}{42a}$=$\frac{73}{21a}$
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