Algebra 1
posted by Cassie .
Which property does the equation 4 + x +7 = 4 + 7 + x illustrate?
A. Identity property of addition
B. distributive property
C. Commutative propert of addition
D. Associative property of addition
I think it's D.
Thank You.

I think it is C
look here right now:
http://www.coolmath.com/prealgebra/06properties/01propertiescommutativeaddition01.htm 
Thank You.

You are welcome. Do not forget that site. It explains lots of stuff.