Math
posted by KC .
What addition property can you use to find the missing number?
8+(6+5)=8+(5+_)

a+b=b+a
What does Commutative mean? 
Thankyou Sir for helping me. I am studying for my tcap exam and some of the stuff on the test we didn't have time to cover because it snowed so much and we couldn't go to school.I think I no what I am looking for now. You have been a bunch of help.