No.
The hcf of 51 and 64 is 1.
Yes
51/100 cannot be simplified further.
17/18
45/64 is already in its simplest form
1/7
Yes: 51/75 = 3x17/3x25 = 17/25
0.796875
13/32
51 over 100; 51/100 its prime so you can't simplify it.
5/51 if you simplify it
64/24 = (8*8)/(8*3) = 8/3
its either 1173 over 64 or 1152 and 21 over 64 i think :)