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 - Page 515: 16

Answer

0

Work Step by Step

$\frac{5}{a-7}$+$\frac{5}{7-a}$= $\frac{5}{a-7}$+$\frac{5(-1)}{(7-a)(-1)}$= $\frac{5}{a-7}$+$\frac{-5}{a-7}$= $\frac{5-5}{a-7}$=0
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