SOLUTION: please help to construct a formal proof of validity
1.p>q /.'.(q.r)>p
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Question 640743: please help to construct a formal proof of validity
1.p>q /.'.(q.r)>p
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!
if then therefore if and then
p>q .'. (q.r)>p
answer is
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