Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 1 - Foundations for Algebra - 1-5 Adding and Subtracting Real Numbers - Practice and Problem-Solving Exercises - Page 36: 70



Work Step by Step

We begin by following the instructions to plug -4 in for a and 7 in for b. Thus, we obtain: $-7-(-4) $ A key rule to remember is that subtracting a negative is the same as addition. Thus, it follows: $-7-(-4)=-7+4$ We must recall that a negative becomes more positive when a positive number is added to it. Therefore, we find: $-7+4=-3$
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.