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 4 - Polynomials - 4.7 Polynomials in Several Variables - 4.7 Exercise Set: 25

Answer

$2r-6s$

Work Step by Step

By combining like terms, the given expression, $ 3r+s-r-7s ,$ simplifies to \begin{array}{l}\require{cancel} (3r-r)+(s-7s) \\\\= 2r-6s .\end{array}
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