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: 15



Work Step by Step

$\frac{9}{x-3}$+$\frac{9}{3-x}$= $\frac{9}{x-3}$+$\frac{9(-1)}{(3-x)(-1)}$= $\frac{9}{x-3}$+$\frac{-9}{x-3}$= $\frac{9-9}{x-3}$=0
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