64/125 cannot be simplified.
It is: 72/96 = 3/4 simplified
63/64 cannot be simplified further.
It is: 90/96 = 15/16 simplified
No.
27/64 is simplified.
It is: 78/96 = 13/16 simplified
9/96 = 3/32
2 is.
825/64 cannot be simplified because the two numbers are co-prime.
64/76 = 16/19
It is 64/125, a fraction which cannot be simplified.