Answer
$-4-(-5)$
=$1$
Work Step by Step
The answer is $1$ not $-1$ because when subtracting an integer, the double negatives becomes positive.
$-4-(-5)$ becomes $-4+5$ which is equal to $1$.
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 1 - Foundations for Algebra - 1-5 Adding and Subtracting Real Numbers - Practice and Problem-Solving Exercises - Page 34: 47
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