17/20
68/80 = 34/40 = 17/20 <-----------------------------
68/17 equals 4 in its simplest form.
16/17 is the simplest form.
68/4 = 17
Expressed in its simplest form, 51/68 is equal to 3/4 or three quarters.
32/68 = 8/17.
51/68 = 3/4
In its simplest form it is 68 over 1.
34/68 = 1/2
8x/68 = 2x/17
68/78 = 34/39