it can't be simplified
4/15 is already simplified.
11/15 is in its simplest form.
It's already in simplest form.
16/15 is in its simplest form.
7/15 is in its simplest form.
17/15 is in its simplest form.
it is already in simplest form.
4/9 plus 7/15 = 41/45 in its simplest form
2/3
3/5 :)
2/5