5. The proofs are displayed below without explanations. Be sure to fill them in. (b) (pAg)r = PAqVr = (Va) Vr ( = PV (7Vr) ( = p (7vr) ( ) (p 7) A (pF) = (PV7)AVT) ( = pv (7Ar) (c) PA(qvr)

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