Answer
$-9$
Work Step by Step
The given expression, $
18\div(-2)
$, simplifies to
\begin{array}{l}\require{cancel}
\dfrac{18}{-2}
\\\\=
\dfrac{\cancel{-2}\cdot(-9)}{\cancel{-2}}
\\\\=
-9
.\end{array}
Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
by Bittinger, Marvin L.; Ellenbogen, David J.; Johnson, Barbara L.
Published by
Pearson
ISBN 10:
0-32184-874-8
ISBN 13:
978-0-32184-874-1
Chapter 1 - Introduction to Algebraic Expressions - 1.7 Multiplication and Division of Real Numbers - 1.7 Exercise Set - Page 58: 57
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