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 - 1.5 - Use of Properties - Problem Set 1.5: 76

Answer

$230$

Work Step by Step

Combining like terms, the given expression, $ -9x+xy-4xy-x ,$ simplifies to \begin{array}{l}\require{cancel} (-9x-x)+(xy-4xy) \\\\= -10x-3xy .\end{array} Substituting $ x=10 $ and $ y=-11 ,$ the resulting expression above evaluates to \begin{array}{l}\require{cancel} -10(10)-3(10)(-11) \\\\= -100+330 \\\\= 230 .\end{array}
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