Topic: Associative, Commutative, and Distributive Properties
Which property is not used to simplify the following expression?
2*(x+5)+7x=(2x+10)+7x
=(10+2x)+7x
=10 +(2x+7x)
=10 + 9x
=9x + 10
A. associative property of addition
B. commutative property of addition
C. distributive property
D. commutative property of multiplication