а) 91 1/6 + 3 5/18 = 91 3/18 + 3 5/18 = 94 8/18 = 94 4/9
б) 1 4/15 + 2 3/20 = 1 16/60 + 2 9/60 = 3 25/60 = 3 5/12
в) 5 1/8 + 41 7/12 = 5 3/24 + 41 14/24 = 46 17/24
г) 39 5/6 + 12 5/9 = 39 15/28 + 12 10/18 = 51 25/28
д) 36 5/7 + 12 7/8 = 36 40/56 + 12 49/56 = 48 89/56 = 49 33/56
е) 5 2/3 + 3/4 = 5 8/12 + 9/12 = 5 17/12 = 6 5/12
ж) 4 + 3 3/7 = 3 7/7 + 3 3/7 = 6 10/7 = 7 3/7
з) 8 7/9 + 3 = 11 7/9
и) 1 - 8/15 = 15/15 - 8/15 = 7/15
к) 3 - 2/11 = 11/11 - 2/11 = 9/11
л) 4 - 4/9 = 3 9/9 - 4/9 = 3 5/9