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Mathematics, 17.10.2019 18:20 paigehixson9457

This is my third time posting this question, which is my fault. my teacher does not want me to use substitution rules.

using rules of inference and no substitution, prove that:

–p +-q) + (pλq)

and:

(5l + d) + (byd)

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Answers: 1

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