Elementary Algebra

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

Chapter 7 - Algebraic Fractions - 7.5 - Fractional Equations and Problem Solving - Problem Set 7.5: 31

Answer

$x = 39$

Work Step by Step

1. Cross multiply: $7(x-9) = 5(x+3)$ 2. Expand and solve $7x - 63 = 5x + 15$ $7x - 5x - 63 - 15 = 0$ $2x - 78 = 0$ $2(x- 39) = 0$ $x - 39 = 0$ $x = 39$
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.