Answer
9
Work Step by Step
When we add a positive and a negative number, the positive number gets smaller. Therefore, it follows that:
$12+(-3)=9$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 1 - Foundations for Algebra - 1-9 Patterns, Equations, and Graphs - Mixed Review - Page 66: 53
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