Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 2 - Solving Equations - 2-3 Solving Multi-Step Equations - Practice and Problem-Solving Exercises: 55

Answer

$x = 15$

Work Step by Step

$115 = (20 + 3x) + (20 +2x)$ $115 = 40 + 5x$ Subtract $40$ from both sides. $115 - 40 = 5x$ $5x = 75$ Divide each side by 5 in order to isolate x. $x = 15$
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