please help me answer these, an explanation would help a lot !

Simplify each logic expression using Laws and Rules of Boolean Algebra and De Morgan's Theorems. The first one is done for you. There is usually more than one way to arrive at the same result. 1) (AB(C+(BD))+(AB))CD=(ABC+AB(B+D)+A+B)CD=(ABC+ABB+ABD+A+B)CD=ABCCD+ABBCD+ABCDD+ACD+BCD=ABCD+0+0+ACD+BCD=(AB+A+B)CD=(A+B+B)CD=CD 2) AB+A(B+C)+B(B+C) 3) AB(C+BD)+(A2B2)C 4) AB+A(B+C)+B(B+C) 5) ABC+ABC+ABC+AC+ABC 6) (AB)+(AC)+ABC