Answer
$0$
Work Step by Step
RECALL:
For any real number $a$,
$a+-a = 0$
Thus,
$15.3+(-15.3)=0$
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 1 - Section 1.2 - Operations with Real Numbers and Simplifying Algebraic Expressions - Exercise Set - Page 27: 28
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