17/81 - 1/9=? 9/14-35/98=? 3/5+16/65=?

Question

17/81 - 1/9=? 9/14-35/98=? 3/5+16/65=?

Answer 1

17/81-1/9=17/81-9/81=8/81
9/14-35/98=63/98-35/98=28/98=14/49=2/7
3/5+16/65=39/65+16/65=55/65=11/13