Ответ:

Пошаговое объяснение:

Н) 3,5 + 5 1/7 - 2 3/14 = 3 1/2 + 5 2/14 - 2 3/14 = 3 7/14 + 5 2/14 - 2 3/14 = 8 9/14 - 2 3/14 = 6 6/14 = 6 3/7

И) 7,6 - 4 2/3 + 2 1/15 = 7 3/5 - 4 10/15 + 2 1/15 = 7 9/15 - 4 10/15 + 2 1/15 = 9 10/15 - 4 10/15 = 5

B) 2,25 + 11 1/15 - 7 1/6 = 2 1/4 + 11 1/15 - 7 1/6 = 2 15/60 + 11 4/60 - 7 10/60 = 13 19/60 - 7 10/60 = 6 9/60 = 6 3/20

T) 6,8 - 2 1/3 + 1,2 = 8 - 2 1/3 = 7 3/3 - 2 1/3 = 5 2/3