7.分配律 A.(B+C)=AB+AC 4+BC=(4+B(4+C) 8.吸收律1 (A+B)(A+B)=A AB+AB=A 9.吸收律2 4(4+B)=A A+AB=A 10.吸收律3 4(+B)=AB A+AB=A+B 11.多余项定律 (4+BX4+CX(B+C)=(4+BX4+C)AB+AC+BC=AB+AC 12.求反律 AB=A+B 4+B=A.B 13.否否律 7-413.否否律 12.求反律 11.多余项定律 10.吸收律3 9.吸收律2 8.吸收律1 7.分配律 A(B+C) = AB+ AC A+ BC = (A+ B)(A+C) (A+ B)(A+ B) = A AB + AB = A A(A+ B) = A A+ AB = A A+ AB = A+ B (A+ B)(A+C)(B +C) = (A+ B)(A+C) A(A+ B)= AB AB+ AC + BC = AB+ AC AB = A+ B A+ B = AB A = A