Answer
$12$
Work Step by Step
Substituting $a=
-5
$ and $b=
9
$, the given expression, $
-2a+\dfrac{a-b}{a-2}
,$ evaluates to
\begin{array}{l}\require{cancel}
-2(-5)+\dfrac{-5-9}{-5-2}
\\\\=
10+\dfrac{-14}{-7}
\\\\=
10+2
\\\\=
12
.\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 - Chapter 1 Review Problem Set - Page 38: 59
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