Answer quick please i will mark brainliest:
1. 5 3/4 + 2 11/12
2. 5 1/2 - 1 2/7
3. 5 1/2 - 2 11/12
4. 5 3/4 - 2 11/12
5. 3 1/3 + 4 1/12
6. 7/10 - 1/4
7. 11/18 + 3/9
8. 4 1/12 - 3 1/3
9. 13/15 - 2/5
10. 2 5/6 + 3 2/5
11. 11/18 - 1/6