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.
$x = 15$
Algebra 1
by Hall, Prentice
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 - Page 99: 55
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