Answer:
9(x+5)=9(5+x)
Explanation:
This is tricky because you were probably thrown off by the multiplication step from the parentheses. Since the question wants you to demonstrate your knowledge of the commutative property of addition, you will only worry about inside the parentheses.
So, the commutative property is basically just moving numbers/variables around the addition sign to show that the answer will remain the same either way.
Because of this, we can simply move the (x+5) around to (5+x).
Final answer: 9(x+5)=9(5+x)