设甲原来x千克,乙原来330-x
(1-2/3)x+(1-3/7)(330-x)=150
1/3x+4/7×330-4/7x=150
7x+12×330-12x=150×21
5x=12×330-150×21
x=12×66-30×21
x=162
∴甲原来162千克,乙原来330-162=168千克������ԭ��Ϊʲô��330-X������Ͱ�͹���330ǧ�����ԭ��xǧ�ˣ���ԭ��330-x