5/6+3/4=?,9/10-1/6=?

Question

5/6+3/4=?,9/10-1/6=?

Answer 1

5/6 + 3/4 = 10/12 + 9/12 = 19/12 = 1 7/12
9/10 - 1/6 = 27/30 - 5/30 = 22/30 = 11/15