Б) 2/9 + 2/3 = 2/9 + 6/9 = 8/9
В) 3/4 + 5/8 = 6/8 + 5/8 = 11/8 = 1 3/8
Г) 7/8 + 1/2 = 7/8 + 4/8 = 11/8 = 1 3/8
Д) 1/2 + 1/4 = 2/4 + 1/4 = 3/4
Е) 3/10 + 2/5 = 3/10 + 4/10 = 7/10
Ж) 1/6 + 2/3 = 1/6 + 4/6 = 5/6
З) 3/5 + 1/20 = 12/20 + 1/20 = 13/20
Б) 2/9 + 2/3 = 2/9 + 6/9 = 8/9
В) 3/4 + 5/8 = 6/8 + 5/8 = 11/8 = 1 3/8
Г) 7/8 + 1/2 = 7/8 + 4/8 = 11/8 = 1 3/8
Д) 1/2 + 1/4 = 2/4 + 1/4 = 3/4
Е) 3/10 + 2/5 = 3/10 + 4/10 = 7/10
Ж) 1/6 + 2/3 = 1/6 + 4/6 = 5/6
З) 3/5 + 1/20 = 12/20 + 1/20 = 13/20