Answer
$x=8$
Work Step by Step
LCD$=2x$, thus multiplying both sides by the LCD: $5x(\frac{7x-4}{5x})=5x(\frac{9}{5}-\frac{4}{x})\\7x-4=9x-20\\-4=2x-20\\16=2x\\x=8$
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
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: 6
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