Решите пожалуйста ! (15:5/18:3 3/8)*(_1/16-11/36-5/48-5/18)/8 21/22-11 5/11):1 2/3

1) 8/3 : 5/4 x 6 = 12 4/5
  8/3 x 4/5 = 32/15
  32/15 x 6/1 = 192/15 = 12 целых 4/5

2) -0,125 : 0,25 + 25/16 : ( - 2,5 ) = -1,125
- 12,5 : 25 = -0,5
25/16 : -5/2 = 25/16 x -2/5 = -5/8 = -0,625
-0,5 - 0,625 = -1,125
3) (15:5/8:3 3/8)*(1/16+11/36+5/48+5/18)
(11 5/11-8 21/22):1 2/3 = 3 целых 7/19

15/1 x 8/5 = 24
24/1 x 8/27 = 192/27
1/16 + 11/36 = 53/144
5/48 + 5/18 = 55/144
53/144 + 55/144 = 108/144 =27/38
192/27 x 27/38 = 192/38 = 96/19

  126/11 - 197/22 = 5/2
5/2 : 5/3 = 3/2

96/19 : 3/2 = 64/19 = 3 целых 7/19