42/121 is in its simplest form.
121/182 is in its simplest form.
121/90 is already in its simplest form
121% as a fraction in its simplest form is 121/100
121/200 is in its simplest form.
That is simplest form.
36/121
12.1 in a mixed number in simplest form = 121/10
It is already in its simplest form.
11/121 = 1/11
121/18 is already in its simplest form
121/999 is as simple as it gets.