Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapter 9 - Basic Algebra - 9.2 Adding and Subtracting Signed Numbers - 9.2 Exercises: 9

Answer

7

Work Step by Step

To add $-1+8$, we can take the absolute value of both numbers. $|-1|=1$ $|8|=8$ These two numbers differ in absolute value by 7. The number with the higher absolute value is positive, so the result will be positive. Therefore, $-1+8=7$.
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.