Question 1157892
II. Use Conditional Proof to solve the following arguments 
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 1.  J ⊃ (K ⊃ L)
 2.  J ⊃ (M ⊃ L)
 3.  ~L                / J ⊃ ~(K v M)
                  | 4.  J        Assumption for Conditional Proof
                  | 5.  K ⊃ L    1,4, Modus Ponens
                  | 6.  ~K       5,3, Modus Tollens
                  | 7.  M ⊃ L    2,4, Modus Ponens
                  | 8.  ~M       7,3, Modus Tollens
                  | 9. ~K ● ~M   6,8, Conjunction 
                  |10. ~(K v M)  9, DeMorgan's Law
11. J ⊃ ~(K v M)       Lines 4-10     Conditional Proof

Edwin</pre>