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 189: 50


The solution is -2

Work Step by Step

10w+8=w-10 Subtract 8 from both sides 10w+8-8=w-10 -8 10w =w-18 Subtract w from both sides 10w-w =w-18-w 9w =-18 Divide by 9 on both sides $\frac{9w}{9}$=$\frac{-18}{9}$ w=-2 The solution is -2 Check 10w+8=w-10 Replace x with -2 10(-2)+8=-2-10 Multiply -20+8=-12 -12=-12
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