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logic 7
Check this out: https://en.m.wikipedia.org/wiki/De_Morgan's_laws
The rules can be expressed in English as:
   The negation of a conjunction is the disjunction of the negations.    The negation of a disjunction is the conjunction of the negations.  Or in layman's terms:
The angle of the dangle is proportional to the mass of the ass, plus the heat of the meat, minus the gravity of the cavity