Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 4 Quadratic Functions and Factoring - Prerequisite Skills - Page 234: 14

Answer

7

Work Step by Step

Getting x on one side of the equation and solving, we obtain: $$4x-12 =x+9 \\ 3x -12 =9 \\ 3x=21 \\ x=7$$
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