Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 4 - Proportions, Percents, and Solving Inequalities - Chapters 1-4 Cumulative Review Problem Set - Page 186: 37

Answer

x = 1.5

Work Step by Step

0.2x + 0.1(x-4) = 0.7x - 1 Multiply both sides by 10 to clear the equation of all decimals. 2x + 1(x-4) = 7x - 10 Use the distributive property. 2x + x - 4 = 7x - 10 10 - 4 = 7x - 2x - x 6 = 4x Divide both sides by 4. 1.5 = x
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