Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10: 0134467795
ISBN 13: 978-0-13446-779-5

Chapter 9 - Basic Algebra - 9.7 Solving Equations with Several Steps - 9.7 Exercises - Page 678: 54



Work Step by Step

Step 1. Subtract 2a from both sides of the equation. $8+4a-2a=2a-2a+2$ $8+2a=2$ Step 2. Subtract 8 from both sides. $8-8+2a=2-8$ $2a=-6$ Step 3. Divide both sides by 2. $\frac{2a}{2}=\frac{-6}{2}$ $a=-3$
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