#### Answer

$x=10$

#### Work Step by Step

$9x-12=78\rightarrow$ add 12 to both sides
$9x-12+12=78+12\rightarrow$ simplify
$9x=90\rightarrow$ divide both sides by 9
$9x\div9=90\div9\rightarrow$ simplify
$x=10$

Published by
Pearson

ISBN 10:
0321955048

ISBN 13:
978-0-32195-504-3

$x=10$

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

Update this answerAfter 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.