2 1/5 + 2 5/12 = (2+2)+(2/2+5/12) = 4 7/12
5 1/10 + 8 3/8 = (5+8)+(4/40+15/40)= 13 9/40
5 3/18 + 18 1/27 = (5+18)+(9/54+2/54)= 23 11/24
2 1/5 + 2 5/12 = (2+2)+(2/2+5/12) = 4 7/12
5 1/10 + 8 3/8 = (5+8)+(4/40+15/40)= 13 9/40
5 3/18 + 18 1/27 = (5+18)+(9/54+2/54)= 23 11/24