1) 1 целая 1/5 * ( - 5/12) =
2) - 3 целых 1/9 : ( - 1 целая 1/6) =
3) - 2 целых 3/5 * 0 =

1) 1 1/5 * -5/12 = 6/5 * -5/12 = -1/2
2) -3 1/9 : -1 1/6 = -28/9 * -6/7 = 8/3 = 2 2/3
3) -2 3/5 * 0 = 0