Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 1 - Section 1.4 - Solving Linear Equations - Exercise Set - Page 51: 63

Answer

x = 10

Work Step by Step

0.7x + 0.4(20) = 0.5(x + 20) Expand the right side of the equation: 0.5(x + 20) = 0.5x + 10 Rewrite the equation: 0.7x + 0.4(20) = 0.5x + 10 Simplify 0.7x + 8 = 0.5x + 10 Subtract 8 from both sides: 0.7x + 8 - 8 = 0.5x + 10 - 8 0.7x = 0.5x + 2 Simplify 0.2x = 2 Divide both sides by 2: x = 10
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.

GradeSaver will pay $15 for your literature essays
GradeSaver will pay $25 for your college application essays
GradeSaver will pay $50 for your graduate school essays – Law, Business, or Medical
GradeSaver will pay $10 for your Community Note contributions
GradeSaver will pay $500 for your Textbook Answer contributions