87/91 is in its simplest form.
77/91 in lowest terms is 11/13
65/91 = 5/7
65 over 91 in simplest form is 5/7
39/91 can be cancelled down to 3/7, by dividing both the numerator and denominator by 13.
31/2 in its lowest form.
13/7 is the lowest form
39/91 = 3/7
49/91 reduces to 7/13
8/91
It is: 7/9
91