Logic Deductions

PLEASE HELP!
The annotations that explain how each line was derived have been left off the following deductions. For each line, supply the rule used and the numbers of any earlier lines the rule requires.

2. 1. ~P
2. (Q-->R) & (R-->Q)
3. R v P /.: Q
4. R
5. R-->Q
6. Q

3. 1. P-->Q
2. R-->(~S v T)
3. ~P-->R /.: (~Q & S)-->T
4. ~Q-->~P
5. ~Q-->R
6. ~Q-->(~S v T)
7. ~Q-->(S-->T)
8. (-Q&S)-->T

5. 1. ~(S v R)
2. P-->S
3. T-->(P v R) /.: ~T
4. ~S & ~R
5. ~S
6. ~P
7. ~R
8. ~P & ~R
9. ~(P v R)
10. ~T