Answer
$-4r+28$
Work Step by Step
The distributive property holds that $a(b+c)=ab+ac$.
Therefore, $-4(r-7)=(-4\times r)+(-4\times-7)=(-4r)+(28)=-4r+28$.
Basic College Mathematics (9th Edition)
by Lial, Margaret L.; Salzman, Stanley A.; Hestwood, Diana L.
Published by
Pearson
ISBN 10:
0321825535
ISBN 13:
978-0-32182-553-7
Chapter 9 - Basic Algebra - 9.7 Solving Equations with Several Steps - 9.7 Exercises - Page 678: 22
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