For this case the first thing you should know is the meaning of commutative property. We have then that by definition: Commutative property: Property of certain operations that is verified when changing the order of the terms, the result remains invariable. Thus, an equivalent expression is: (2x + 5) · 8 = (5 + 2x) · 8 Answer: An expression that is equal to (2x + 5) · 8 using the commutative property is: (5 + 2x) · 8