18 = 9 40 20
9/40
9/20
72/40 = 36/20 = 18/10 = 9/5
40/49 is in its simplest form.
40/81 is in its simplest form.
171/40 is in its simplest form.
37/40 is in its simplest form.
40/403 is in its simplest form.
11 over 40 is its simplest form
40/27 is in its simplest form.
40/17 is in its simplest form.