Calculus with Applications (10th Edition)

Published by Pearson
ISBN 10: 0321749006
ISBN 13: 978-0-32174-900-0

Chapter R - Algebra Reference - R.4 Equations - R.4 Exercises - Page R-16: 28


The solution is $x=12$

Work Step by Step

$\dfrac{x}{3}-7=6-\dfrac{3x}{4}$ Multiply the whole equation by $12$: $12\Big(\dfrac{x}{3}-7=6-\dfrac{3x}{4}\Big)$ $4x-84=72-9x$ Take $9x$ to the left side and $84$ to the right side: $4x+9x=72+84$ $13x=156$ Take $13$ to divide the right side: $x=\dfrac{156}{13}$ $x=12$
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.