12/40 = 3/10 (divide top and bottom by common factor 4).
3/40 is in its simplest form.
seven eighths
13/12 is in its simplest form.
The fraction 12/77 is already in the simplest form.
5/12 = is the simplest form.
5/12 is the simplest form.
13/12 is in its simplest form.
12/49 is in its simplest form.
12/17 is in its simplest form.
1/12 is in its simplest form.1/12 is in its simplest form.
19
17/12 is the simplest form.