Basic College Mathematics (9th Edition)

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 679: 34

Answer

-9a

Work Step by Step

The distributive property holds that $a(b+c)=ab+bc$. Therefore, we can use the distributive property to combine like terms. $-10a+a=-10a+1a=(-10+1)a=-9a$
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