| 1. |
7
12 |
− |
2
12 |
= |
| 2. |
3
11 |
− |
2
11 |
= |
| 3. |
6
7 |
− |
2
7 |
= |
| 4. |
5
12 |
− |
2
12 |
= |
| 5. |
2
5 |
− |
1
5 |
= |
| 6. |
8
12 |
− |
5
12 |
= |
| 7. |
4
11 |
− |
1
11 |
= |
| 8. |
5
11 |
− |
3
11 |
= |
| 9. |
8
12 |
− |
3
12 |
= |
| 10. |
1
6 |
− |
1
6 |
= |
| 11. |
7
10 |
− |
4
10 |
= |
| 12. |
7
8 |
− |
3
8 |
= |
| 13. |
4
12 |
− |
3
12 |
= |
| 14. |
3
6 |
− |
1
6 |
= |
| 15. |
5
6 |
− |
3
6 |
= |
| 16. |
5
10 |
− |
4
10 |
= |
| 17. |
3
12 |
− |
1
12 |
= |
| 18. |
6
9 |
− |
1
9 |
= |