Answer
The number is $4$.
Work Step by Step
Let $x = $ the unknown number
$x - 3x = -8$
$-2x = -8$
$x = \frac{-8}{-2}$
$x = 4$
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: 28
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