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 - 1.3 - Integers: Addition and Subtraction - Problem Set 1.3 - Page 19: 36

Answer

$13$

Work Step by Step

The given expression, $ 9-(-4) $, is equivalent to $ 9+4 .$ Since the signs are the same, add the numbers and copy their common sign. Hence, the expression above simplifies to \begin{array}{l}\require{cancel} 13 .\end{array}
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.