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# Using the transformation rules of system P , prove the following argument to be valid: (A B) C Premise 2. (D C) (~E V ~F) Premise 3.

Using the transformation rules of system P, prove the following argument to be valid:

1. (A ⊃ B) ⊃ C Premise

2. (D ⊃ C) ⊃ (~E V ~F) Premise

3. ~(~B V ~E) Premise

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/ :. ~F

2.Using the transformation rules of system