Answer
x=20
Work Step by Step
0.1(x+80)=14-0.2x
0.1x+8=14-0.2x
0.1x+0.2x+8=14
0.3x+8=14
0.3x=14-8
0.3x=6
10(0.3x)=10(6)
3x=60
x=60$\div$3
x=20
Check the answer.
0.1(20+80)=14-0.2(20)
0.1(100)=14-4
10=10
Introductory Algebra for College Students (7th Edition)
by Blitzer, Robert F.
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 142: 52
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