1)4 3/5+ 2 5/7+ 5 9/35= 4 21/35 + 2 25/35+ 5 9/35 = 11 55/35 = 12 20/35
2)1 2/3 + 6 4/15 + 8 17/45= 1 30/45 + 6 12/45 + 8 17/45= 15 59/45 = 16 14/45
3)8 3/40 + 12 11/20 + 6 7/80 = 8 6/80 + 12 44/80 + 6 7/80 = 26 57/80
4)5 7/20 + 20 4/15 + 12 11/60 = 5 21/60 + 20 16/60 + 12 11/60 = 37 53/60
5)5 2/5 + 19 9/10 + 4 33 /50 = 5 20/50 + 10 45/50 + 4 33/50 =1 9 98/50 = 20 48/50
6)31 7/9 + 4 11/27 + 35 43/54= 31 42/54+ 4 22/54 + 35 43/54 = 70 107/54 = 71 53/54