1/278
1112/1
If you mean 11/12 then it is in its simplest form
1/4 is in its simplest form.
4/5 is in its simplest form.
4/5 is the simplest form.
21/4 is in its simplest form.
4/S is in its simplest form.
4/5 is in its simplest form.
31/4 is in its simplest form.
225/4 is in its simplest form.
4/7 is in its simplest form.
4/15 is already in simplest form.4/15 is in its simplest form.