Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 1 - Introduction to Algebraic Expressions - 1.1 Introduction to Algebra - 1.1 Exercise Set - Page 8: 15

Answer

8

Work Step by Step

We are asked to evaluate the given equation for $r=4$. We can plug in directly to evaluate. $12-r=12-(4)=8$
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