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 - Section 2.3 - Solving Linear Equations - Exercise Set - Page 141: 12



Work Step by Step

$20=44-8(2-x)$ $20+8(2-x)=44$ $8(2-x)=44-20$ $8(2-x)=24$ $\frac{8(2-x)}{8}=\frac{24}{8}$ $2-x=3$ $-x=3-2$ $-x=1$ $-x(-1)=1(-1)$ $x=-1$ Check the answer. 20=44-8(2-(-1)) 20=44-8(2+1) 20=44-8(3) 20=44-24 20=20
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