Answer
-2.5
Work Step by Step
Isolating x on one side of the equation, we obtain:
$$4x-12 = 16x+ 18 \\ -12x = 30 \\ x=-2.5$$
Checking:
$$4(-2.5-3) = 16(-2.5)+18 \\ -22=-22$$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 3 Linear Systems and Matrices - Cumulative Review Chapters 1-3 - Page 232: 5
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