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