#### 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.
$x = 15$

Published by
Prentice Hall

ISBN 10:
0133500403

ISBN 13:
978-0-13350-040-0

$x = 15$

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