(1целая 1/3 + 2 целых 5/6) : (0,75 - 1 целая 1/6 ) - 15,6

1) 1 1/3 + 2 5/6 = 1 2/6 + 2 5/6 = 3 7/6 = 4 1/6
2) 0,75 - 1 1/6 = 3/4 - 1 1/6 = 9/12 - 1 2/12 = 9/12 - 14/12 = - 5/12
3) 4 1/6 : ( - 5/12 ) = 25/6 : ( - 5/12 ) = - 10
25
4) - 10 - 15,6 = - 25,6
ответ ( - 25,6 )