You look for a common factor, then divide both numbers by that common factor.
It is: 96/144 = 2/3 as a fraction in its simplest form
It is: 96/800 = 3/25 in its simplest form
It is: 3 16 in its simplest form
3/2
96/128 = 3/4
It is: 96/64 = 3/2
3/2
128
8/3
1/3
32
1/3