Indicate which property is illustrated in Step 2.

Step 1 9 + (2 + 7) + 0 = 9 + (7 + 2) + 0
Step 2 = (9 + 7) + (2 + 0)
Step 3 = (9 + 7) + 2
Step 4 = 16 + 2
A. identity property of addition
B. associative property of addition
C. commutative property of multiplication
D. distributive property

Question

Indicate which property is illustrated in Step 2.

Step 1	9 + (2 + 7) + 0	=	9 + (7 + 2) + 0
Step 2		=	(9 + 7) + (2 + 0)
Step 3		=	(9 + 7) + 2
Step 4		=	16 + 2
	A. 	identity property of addition
	B. 	associative property of addition
	C. 	commutative property of multiplication
	D. 	distributive property

anonymous · Answer

its the associative property of addition

anonymous · Answer

can you explain

anonymous · Answer

http://www.mathsisfun.com/associative-commutative-distributive.html this should help :)