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 - Lesson Check: 7

Answer

Addition and then division.

Work Step by Step

In order to cancel out the subtraction of 9, we must use addition. However, because x is still being multiplied by 2, we now must use division to isolate the variable and solve for x.
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