Derive the Conclusions of Each of the Following Arguments Using $\lor$

question 300

Essay

derive the conclusions of each of the following arguments using the rules of inference from section 3.3 (MP, MT, DS, HS, Add, Conj, Simp, CD, DM, Dist, Assoc, Com, DN).
-1. (C $\lor$ E) $\lor$ D
2. ?E / C $\lor$ D

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