Answer
-20 + x
Work Step by Step
"Sum" means we are adding. The two number we are adding are x and -20, so therefore, the answer is -20 + x
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 3 - Section 3.2 - Integrated Review - Expressions and Equations - Page 183: 36
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