Помогите решить:

1/12 + 5/6=

1 целая - 4/7=

11/16 - 2/8=

1 целая 5/6 - 1/3=

7 целых 1/2 + 1/4=

4 целых 1/6 - 1 целую 1/5=

1/12 + 5/6 = ?

1/12 + 10/12 = 11/12

1 - 4/7 = ?

1 = 7/7

7/7 - 4/7 = 3/7

11/16 - 2/8 = ?

11/16 - 4/16 = 7/16

1 5/6 - 1/3 = ?

1 5/6 = 11/6

11/6 - 1/3 = ?

11/6 - 2/6 = 9/6

9/6 = 1 3/6

7 1/2 + 1/4 = ?

7 1/2 = 15/2

15/2 + 1/4 = ?

30/4 + 1/4 = 31/4

31/4 = 7 3/4

4 1/6 - 1 1/5 = ?

4 1/6 = 25/6

1 1/5 = 6/5

25/6 - 6 / 5 = 125/30 - 36/30

125/30 - 36/30 = 89/30