(2 7/24 : 1 5/6 - 1.6·0.3):(-0.1)= -7.7
1) 2 7/24 : 1 5/6 = 55/24 : 11/6 = 5/4 = 1.25
2)1.6·0.3 = 0.48
3) 1.25 - 0.48 = 0.77
4) 0.77: (-0.1) = -7.7
(5/4-0,48)/(-0,1) = 0.77/(-0,1)= - 7.7
