Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Chapter 3 - Section 3.3 - Solving Linear Equations in One Variable - Exercise Set - Page 188: 14


The solution is -4

Work Step by Step

22-42=4(x-1) Apply the distributive property -20= 4x-4$\times$ 1 -20= 4x-4 Add 4 to both sides -20+4=4x-4+4 Simplify -16=4x Divide both sides by 4 $\frac{-16}{4}$ =$\frac{4x}{4}$ -4=x The solution is -4 Check 22-42=4(x-1) 22-42=4(-4-1) -20=4(-5) -20=-20
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