Answer
$3$
Work Step by Step
$4x - 3 = 9$
First, add 3 to both sides.
$4x = 9 + 3$
$4x = 12$
Then, divide both sides by 4.
$x = 12/4$
$x = 3$
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 2 - Solving Equations - Chapter Review - Page 153: 15
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