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[15 marks, 5 marks each] Use the Equational-style method ONLY to prove the following: (Note: do not use the deduction theoremb. FA> (В > C) %3D (А — В) > (А — С) с. А > ВЕСVA —CVВ

[15 marks, 5 marks each] Use the Equational-style method ONLY to prove the following: (Note: do not use the deduction theorem. Do not use Post's theorem. Do not use Hilbert-Style proof) 2.
b. FA> (В > C) %3D (А — В) > (А — С) с. А > ВЕСVA —CVВ
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Answer #1

IF YOU HAVE ANY DOUBTS COMMENT BELOW I WILL BE TTHERE TO HELP YOU..ALL THE BEST..

As for given obta-- (り- A→ (B->C)三 (A8)→(A>C) FA CBC) CAVBC) A VCB c) Distribuion V aver C AVB) (A B) (nc) (A t (C) AB CVA-CV

I HOPE YOU UNDERSTAND..

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