Introductory Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-805-X
ISBN 13: 978-0-13417-805-9

Chapter 1 - Section 1.5 - Addition of Real Numbers - Exercise Set - Page 64: 83


Start at $0$ then move $a$ units to the right, then move $a$ units to the left. The ending position is the sum of $a+(-a)$.

Work Step by Step

Starting at $0,$ go to the right by $a$ units. To add $-a,$ start at $a$ then go to the left by $a$ units. The ending point (which is at $0$) is the sum of $a+(-a).$
Small 1546437566
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.