Answer
$a$
Work Step by Step
If $a$ is a number, then $-(-a)=a$.
We know this, because $-(-a)=-1\times-a=a$, since the product of two negative numbers is positive.
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 1 - Section 1.4 - Adding Real Numbers - Vocabulary and Readiness Check - Page 36: 3
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter 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.
