Introductory Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-805-X
ISBN 13: 978-0-13417-805-9

Chapter 2 - Review Exercises: 23

Answer

x=-3

Work Step by Step

2(x-4)+3(x+5)=2x-2 2x-2(4)+3x+3(5)=2x-2 2x-8+3x+15=2x-2 (2x+3x)+(-8+15)=2x-2 5x+7=2x-2 5x=2x-2-7 5x=2x-9 5x-2x=-9 3x=-9 x=$\frac{-9}{3}$ x=-3 Check the answer. 2(-3-4)+3(-3+5)=2(-3)-2 2(-7)+3(2)=-6-2 -14+6=-8 -8=-8
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