Elementary Algebra

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

Chapter 3 - Equations and Problem Solving - Chapter 3 Review Problem Set - Page 137: 5



Work Step by Step

We need to get the n alone, so we cancel out the subtraction by adding 3 on both sides. This leaves us with the equation 4n=7n+12. We then subtract by 7n on both sides to find that $-3n=12$. We use division to cancel out multiplication, so we divide both sides by -3 to get that $n=-4$
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