Answer
$-16a-4b$
Work Step by Step
By combining the like terms, the given expression, $
-7a-7b-9a+3b
,$ simplifies to
\begin{array}{l}\require{cancel}
(-7a-9a)+(-7b+3b)
\\\\=
-16a-4b
\end{array}
Elementary Algebra
by Kaufmann, Jerome; Schwitters, Karen;
Published by
Cengage Learning
ISBN 10:
1285194055
ISBN 13:
978-1-28519-405-9
Chapter 1 - Some Basic Concepts of Arithmetic and Algebra - 1.5 - Use of Properties - Problem Set 1.5 - Page 33: 39
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