It is: 13/39 - 4/13 = 1/39
0.65 as fraction in its simplest form is 13/20
It is: 1/10
13/16 is the simplest form.
13/20 is the simplest form.
13/46 is in its simplest form
13/57 is the simplest form
13/21 is in its simplest form.
13/30 is in its simplest form.
13/31 is in its simplest form.
13/42 is in its simplest form.
13/19 is in its simplest form.
13/28 is in its simplest form.