Algebra: A Combined Approach (4th Edition)

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

Chapter 7 - Section 7.5 - Solving Equations Containing Rational Expressions - Exercise Set - Page 523: 21


y = -8

Work Step by Step

$\frac{2y}{y+4}$+$\frac{4}{y+4}$=3 (y+4)$\frac{2y}{y+4}$+(y+4)$\frac{4}{y+4}$=3(y+4) 2y+4=3y+12 2y-3y=12-4 -y=8 y=-8 Check the solution -8 $\frac{2(-8)}{-8+4}$+$\frac{4}{-8+4}$=3 $\frac{-16}{-4}$+$\frac{4}{-4}$=3 4-1=3 3=3
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