Answer
x = -1
Work Step by Step
1.2 + 0.3x = 0.9
1.2 + 0.3x -1.2 = 0.9 -1.2
0.3x = -0.3
$\frac{0.3x}{0.3}$=$\frac{-0.3}{0.3}$
x=-1
Check
1.2 + 0.3x = 0.9
1.2 + 0.3(-1) = 0.9
1.2 - 0.3 = 0.9
0.9=0.9
Prealgebra (7th Edition)
by Martin-Gay, Elayn
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: 35
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