1. additive identity : -72 + 0 = -72
2. multiplicative inverse: 13/17 * 17/13 = 1
3. distributive property: 1/3(24+15) = 1/3*24 + 1/3*15
4. associative property of addition = 101+(29+417) = (101+29) + 417
5. commutative property of addition = (-14) + 81 = 81 +9-14)
hope it helps