Prealgebra (7th Edition)

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

Chapter 5 - Section 5.6 - Solving Equations Containing Decimals - Exercise Set - Page 387: 27

Answer

x = 20

Work Step by Step

2.7x -25 =1.2x +5 2.7x -25 +25=1.2x +5 +25 2.7x =1.2x +30 2.7x -1.2x =1.2x +30 -1.2x 1.5x = 30 $\frac{1.5x}{1.5}$=$\frac{30}{1.5}$ x=$\frac{300}{15}$ x=20 Check Replace x with 20 2.7x -25 =1.2x +5 2.7$\times$ 20 - 25 =1.2$\times$20 +5 54 -25 = 24 +5 29=29
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