Properties Identification: Associative, Commutative

If you please:
The original expression is: ( x + 5 ) + y
One of the following is supposed to be Associative, and the other, Commutative.
x + (5 + y )
x + (y + 5 )
Is there anything that pinpoints the difference? They both look the same except for flipping the terns inside the parentheses.
Thank you.
John Whitaker

Associative - Grouped Differently
Commutative - In a Different Order

Thank you, but that doesn't help. They are grouped differently, and in a different order.

John Whitaker said:

Thank you, but that doesn't help.

Click to expand...

Why not? Follow through, step-by-step, and apply the definitions provided.

In going from the first expression to the second expression, what changed? What rule corresponds to that change? In going from the second expression to the third expression, what changed? What rule corresponds to that change?

Eliz.