Вычислите -(3 5/9-2 2/15): 9,6+0,6*5/6

1) 3 5/9 - 2 2/15 = 3 25/45 - 2 6/45 = 1 19/45
2) -1 19/45 : 9,6 = - 64/45 : 48/5 = - 64/45 · 5/48 =  -4/27
3) 0,6 · 5/6 =  3/5 · 5/6 = 1/2
4) -4/27 + 1/2 = -8/54 + 27/54 = 19/54