Math help pleasee?

Okay, I dont get this math homework! Its on math properties.





(a+b)+c = a+(b+c) how do I know which property is being used?





a(b+c) = ab + ac





15a = 15





(a+b) = (b+a)





Thanks so much!

Math help pleasee?
(a+b)+c = a+(b+c) %26lt;%26lt; associative property of addition


a(b+c) = ab+ac %26lt;%26lt; distributive property of multiplication


15a=15, therefore a=1 %26lt;%26lt; identity property of multiplication


(a+b)=(b+a) %26lt;%26lt; commutative property of addition





what grade are you in?
Reply:Asoccitive property is when its alot of leters and numbers with a plus
Reply:(a+b)+c = a+(b+c)-cumulative


a(b+c) = ab + ac-distributive


15a = 15 associative maybe? I forget what that is


(a+b) = (b+a)-cumulative again