in order to find two equivalent expressions use the commutative property for addition, since there are no negative numbers the order of the factors will not change the result
[tex]8+\frac{3}{4}n+\frac{1}{3}z[/tex]
Also applying the commutative property with the associative property, we can group two terms in a different order and still obtain the same result
[tex](\frac{1}{3}z+\frac{3}{4}n)+8[/tex]
