Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 2 - Solving Equations - 2-2 Solving Two-Step Equations - Practice and Problem-Solving Exercises - Page 91: 12

Answer

$n=5$

Work Step by Step

We need to get the n alone. Thus, we cancel out the subtraction by adding 4 on both sides. This leaves us with the equation $3n=15$. In order to cancel out multiplication, we use division, so we divide both sides by 3 to get that $n=5$. We plug 5 in for n and confirm that our answer is, indeed, correct.
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.