If the m power of - 3a, the cubic power of B and the N + 1 power of - A are of the same kind, then 3m-2n = () is the process of solving the problem

If the m power of - 3a, the cubic power of B and the N + 1 power of - A are of the same kind, then 3m-2n = () is the process of solving the problem

-3A ^ MB ^ 3 is similar to - A ^ 3B ^ n + 1
Then M = 3
3=n+1
n=2
3m-2n=9-4=5