Answer
$-10w+90$
Work Step by Step
The distributive property holds that $a(b+c)=ab+ac$.
Therefore, $-10(w-9)=(-10\times w)+(-10\times-9)=(-10w)+(90)=-10w+90$.
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 - 9.7 Solving Equations with Several Steps - 9.7 Exercises - Page 676: 25
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