Answer
The number is $7$.
Work Step by Step
Let $x = $ the number
$30 - 3x = 2 + x$
$30 - 2 = x + 3x$
$28 = 4x$
$4x = 28$
$x = \frac{28}{4}$
$x = 7$
Basic College Mathematics (10th Edition)
by Lial, Margaret L.; Salzman, Stanley A.; Hestwood, Diana L.
Published by
Pearson
ISBN 10:
0134467795
ISBN 13:
978-0-13446-779-5
Chapter 9 - Basic Algebra - 9.8 Using Equations to Solve Application Problems - 9.8 Exercises - Page 687: 31
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