Elementary Algebra

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: 59

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}
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