Помогите решить)
1) 8 3/7 - 4 2/5 =?
2) 6 11/15 - 2 7/10 =?
3) 16 17/18 - 2 11/12 =?
4) 18 13/48 - 5 3/64 =?

1) 8 3/7 - 4 2/5 =8 15/35-4 14/35=

4 1/35

2) 6 11/15 - 2 7/10 =6 22/30-2 21/30=

4 1/30

3) 16 17/18 - 2 11/12 =16 34/36-

2 33/36=14 1/36

4) 18 13/48 - 5 3/64 =18 52/192-

5 9/192=13 43/192