pls solve and explain steps

Consider the following operators: 1. :) where a : )b = 4a + 7b + 2 2. V where a Vb = 6 3. where a ob = 2a + 2b 4. * where a * b = a + 5b 5 . O where a @ b = 3ab 6. where a @ b = a- a2 + b + 8 7. where a Ob = a2 + 62 8 . @ where a@b = 7b 9. # where a#b = the smaller value of a or b a. Prove any one of the operations is commutative. b. Give a counterexample for one of the operations that is not commutative