Can someone please help me answer theses, i have to have them turned in 3 hours.

Answer:
8. h-2
9. +7
10. 15+x
11. 20-y
12. 12x
13. 23/n
14. 5x
15. m+n
Where are problems 16-20?
21. x-2
22. 4m
23. y/10
24. 3-x
25. 9+8
26. 6x
27. r+s
28. p-q
Let me know if this helps :)