设鸡蛋买x个,鸭蛋买y个,鹅蛋买z个,则列方程组1.5x+y/3+3z=1004.5x+y+9z=300x+y+z=100相减得3.5x+8z=2007x+16z=400z=(400-7z)/16=25-(7x/16)因为z是整数,所以x是16的倍数x=0,z=25,y=75x=16,z=18,y=66x=32,z=11,y=57x=...