To obtain a 1 output from the Boolean expression A(B+C), input A must be at the 1 level, as
well as either input B or input C. In the Boolean expression A(B+C), there are two
combinations of variables which will produce a 1 output: AB or AC. Therefore, A(B+C) =
AB+AC. When an expression takes the form of A(B+C) or AB+AC, it can be converted to
the opposite form by using the DISTRIBUTIVE law.
A(B+C) = AB+AC
AB+AC = A(B+C)