Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 6 - Section 6.6 - Rational Equations - Exercise Set - Page 462: 13



Work Step by Step

LCD$=x+7$, thus multiplying both sides by the LCD: $(x+7)(1-\frac{4}{x+7})=(x+7)\frac{5}{x+7}\\x+7-4=5\\x+3=5\\x=2$
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