stuck on this problem please help
Can use rules of implication and first five rules of replacement
1. K>S
2. (~S&K)v(~S&~Q)
/~QvU
3. ~S&(Kv~Q) 2, Distribution ["Factoring" out ~S&]
4. ~S 3, Simplicication
5. (Kv~Q)&~S 3, Commutation
6. Kv~Q 5, Simplification
7. ~S>~K 1, Transposition
8. ~K 7,4, Modus ponens
9. ~Q 6,8, Disjunctive syllogism
10. ~QvU 9, Addition
Edwin