Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 1 - Section 1.4 - Adding Real Numbers - Practice: 12

Answer

a. -2, b. -21

Work Step by Step

a. $16+(-9)+(-9)=16-9+(-9)=7+(-9)=7-9=-2$ b. $[3+(-13)]+[-4+(-7)]=[-10]+[-(4+7)]=[-10]+[-(11)]=[-10]+[-11]=-10+(-11)=-(10+11)=-(21)=-21$
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.