No.
64 over 96 simplified = 2/3
64/125 cannot be simplified.
63/64 cannot be simplified further.
11/64
825/64 cannot be simplified because the two numbers are co-prime.
It is 64/125, a fraction which cannot be simplified.
64/76 = 16/19
8
Yes.
11/39 is simplified.
8/11 is as simplified as it can get.
64/125 cannot be simplified.