A) 3 + 8 5/12 = 3 + 8 + 5/12 = 11 5/12
Б) 10 6/7 - 3 = 10 + 6/7 - 3 = 10 6/7 - 21/7 = 10 + 6/7 - 3 = 9 5/7
В) 4 2/13 + 5 7/13 = 4 + 2/13 + 5 + 7/13 = 9 9/13
Г) 8 7/12 - 4 2/12 = 8 + 7/12 - 4 - 2/12 = 8 + 7/12 - 4 - 1/6 = 3 5/12
Д) 4 8/11 + 5 7/11 = 4 + 8/11 + 5 + 7/11 = 9 15/11 = 10 4/11
Е) 7 5/9 - 2 8/9 = 7 + 5/9 - 2 - 8/9 = 7 + 5/9 - 2 - 1 = 4 5/9
Ж) 7 - 3/8 = 7 - 3/8 = 6 5/8 = 6 5/8
З) 10 = 3 7/15 - утверждение неточное
A) 3 + 8 5/12 = 3 + 8 + 5/12 = 11 5/12
Б) 10 6/7 - 3 = 10 + 6/7 - 3 = 10 6/7 - 21/7 = 10 + 6/7 - 3 = 9 5/7
В) 4 2/13 + 5 7/13 = 4 + 2/13 + 5 + 7/13 = 9 9/13
Г) 8 7/12 - 4 2/12 = 8 + 7/12 - 4 - 2/12 = 8 + 7/12 - 4 - 1/6 = 3 5/12
Д) 4 8/11 + 5 7/11 = 4 + 8/11 + 5 + 7/11 = 9 15/11 = 10 4/11
Е) 7 5/9 - 2 8/9 = 7 + 5/9 - 2 - 8/9 = 7 + 5/9 - 2 - 1 = 4 5/9
Ж) 7 - 3/8 = 7 - 3/8 = 6 5/8 = 6 5/8
З) 10 = 3 7/15 - утверждение неточное