В) 6 5/6 - ( 2 1/4 + 5/6) =
2 3/12 + 10/12 = 2 13/12 = 3 1/12
6 10/12 - 3 1/12 = 3 9/12= 3 3/4
г) 4 3/7 - (5,5 - 1 4/7) = 5,5 = 5 1/2
5 1/2 - 1 4/7 = 5 7/14 - 1 8/14 = 4 21/14 - 1 8/14 = 3 13/14
4 3/7 - 3 13/14 = 4 6/14 - 3 13/14 = 3 20/14 - 3 13/14 = 7/14 = 1/2
в) 9 2/3 - ( 5 2/3 + 1/4) =
5 2/3 + 1/4 = 5 8/12 + 3/12 = 5 11/12
9 2/3 - 5 11/12 = 9 8/12 - 5 11/12 = 8 20/12 - 5 11/12 = 3 9/12 = 3 3/4
г) 7 3/4 - ( 4,5 - 3 1/4) = 4,5 = 4 1/2
4 1/2 - 3 1/4 = 4 2/4 - 3 1/4= 1 1/4
7 3/4 - 1 1/4 = 6 2/4 = 6 1/2
Надеюсь все правильно:)