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: 31


The solution is 270

Work Step by Step

-20-(-50)=$\frac{x}{9}$ Simplify -20 +50=$\frac{x}{9}$ 30=$\frac{x}{9}$ Multiply both sides by 9 30$\times$9=$\frac{x}{9}$9 270=x The solution is 270 Check -20-(-50)=$\frac{x}{9}$ Replace x with 270 -20-(-50)=$\frac{270}{9}$ Simplify -20+50= 30 30=30
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