1) (1 5/6-3/8) * x=2 1/12. 2) (5/8-1/4) : x=1/6.3) x * (11/12-1/4) = 3/8.4) x * (1 2/3+5/9) = 2/3.5).5) x: (4 1/3-3) = 1 1/2.

1) (1 5/6-3/8) * х=2 1/12

1 5/6-3/8 = 1 11/24

1 11/24*х = 2 1/12

х = 2 1/12:1 11/24 = 1 3/7

2) (5/8-1/4) : х=1/6

5/8-1/4=3/8

3/8:х=1/6

х = 9/4=2 1/4

3) х * (11/12-1/4) = 3/8

11/12-1/4=8/12

х*8/12=3/8

х = 3/8:8/12 = 9/16

4) х * (1 2/3+5/9) = 2/3

1 2/3+5/9=20/9

х*20/9=2/3

х=2/3:20/9=3/10

5) х: (4 1/3-3) = 1 1/2

х=2