Answer
commutative property of addition
Work Step by Step
$(3*7)+(4*7)=(4*7)+(3*7)$
The order of addition is switched, so this is the commutative property of addition.
College Algebra (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-32178-228-3
ISBN 13:
978-0-32178-228-1
Chapter P - Summary, Review, and Test - Review Exercises - Page 90: 18
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