Simplifying y = ABCD + abd + BCD + ABC + BD + BC by algebraic method

Simplifying y = ABCD + abd + BCD + ABC + BD + BC by algebraic method

Y=ABCD+ABD+BCD+ABC+BD+BC
=(ABCD+BC)+(ABD+BD)+(BCD+BD)+(ABC+BC)+(BD+BC)
=BC+BD+BC
=BC+BD
=B(C+D)