There is no conclusion given for "Question 1".
Can't do that one for you.
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 Question 2
 1. (P v U) ⊃ ~L
 2. (I v W) ⊃ ~K
 3. L • K            / ~(U v W)

 4. L              3, simplification
 5. ~~L            4, double negation
 6. ~(P v U)       1,5, modus tollens
 7. ~P • ~U        6, DeMorgan's law
 8. ~U • ~P        7, commutation
 9. ~U             8, simplification
10. K • L          3, commutation
11. K              10, simplification
12. ~~K            11, double negation
13. ~(I v W)       2,12, modus tollens
14. ~I • ~W        13, DeMorgan's law
15. ~W • ~I        14, commutation
16. ~W             15, simplification
17. ~U • ~W        9,17, conjunction
18. ~(U v W)       17, DeMorgan's law


 Question 3
 1. R ⊃ (C v M)
 2 ~(I v C)
 3. ~(A v M)      / ~R

 4. ~I • ~C                2, DeMorgan's law
 5. ~C • ~I                4, commutation
 6. ~C                     5, simplification
 7. ~A • ~M                3, DeMorgan's law
 8. ~M • ~A                7, commutation
 9. ~M                     8, simplification
10. ~C • ~M                6,9 conjunction
11. ~(C v M)               10, DeMorgan's law
12. ~R                     1,11, modus tollens

Edwin