How can we simplify $$F=MNO+Q'P'N'+PRM+Q'OMP'+MR$$ using the theorems of boolean algebra, not Karnaugh or anything else?
Well, I can obviously simplify $MR(P+1)=MR$, so the expression becomes $$MNO+Q'P'N'+MR+Q'OMP'$$ But from here, I tried to use De Morgan or to calculate the negative form of $F$, but none of this helps.