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 - 1.1 - Numerical and Algebraic Expressions - Problem Set 1.1: 7

Answer

$72$

Work Step by Step

Using integer operations, the given expression, $ 4(12+9)-3(8-4) ,$ simplifies to \begin{array}{l}\require{cancel} 4(21)-3(4) \\\\= 84-12 \\\\= 72 .\end{array}
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