Answer
x = -4
Work Step by Step
7x + 12 = 3x - 4
Subtract 12 from both sides.
7x = 3x - 16
Subtract 3x from both sides.
4x = -16
Divide both sides by 4.
x = -4
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 3 - Section 3.3 - Solving Linear Equations in One Variable - Practice - Page 184: 1
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