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 - Study Summary - Practice Exercises: 20

Answer

$-5$

Work Step by Step

The expression $a+(-b)$ simplifies to $a-b.$ Hence, the given expression, $ -15+(-10)+20 ,$ simplifies to \begin{array}{l}\require{cancel} -15+(-10)+20 \\\\= -15-10+20 \\\\= -25+20 \\\\= -5 .\end{array}
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