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Please help with solving a proof

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Please help with solving a proof, the third line is the conclusion. I can't figure it out. 

1. (K v L) -> M 
2. ~K v N) -> O 

M v O

Mar 4th, 2015

  1. (K v L) -> M   premise




1.3  (~KvM)  Decomposing a conjunction

1.4  (Mv~K)

1.5  ~ M->~K

2. (~K v N) -> O  premise



2,3  (Kv0)  Decomposing a conjunction

2.4  ~K->0

3.  ~ M->0 law of syllogism  1.5 , 2.4


  MvO  is valid argument

Jun 1st, 2015

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