请问这个lingo的线性规划算法哪里错了？ 版本是lingo 11.0……

max=(228.5-x1)*2.125/43.7+(84.08-x2)*0.5625/47.04+(137.6-x3)*1.0625/34.7
x1>=184.8;
x1<=228.5;
x2>=37.04;
x2<=84.08;
x3>=102.9;
x3<=137.6;
x1+x2<=272.34;
x2+x3<=190.44;
x1+x3<=338.2;
x1+x2+x3<=375.24;

点运行后总是提示第一行出错，代码11……
求大神求帮助……满地打滚求……

我用的lingo 11.0啊……题目里已经说了啊…
提示错误，根本运行不出来结果……
就说是错误代码11
问度娘说是语法有误？求高手啊……

目标函数最后要加分号啊

max=(228.5-x1)*2.125/43.7+(84.08-x2)*0.5625/47.04+(137.6-x3)*1.0625/34.7;
x1>=184.8;
x1<=228.5;
x2>=37.04;
x2<=84.08;
x3>=102.9;
x3<=137.6;
x1+x2<=272.34;
x2+x3<=190.44;
x1+x3<=338.2;
x1+x2+x3<=375.24;

我不会~~~但还是要微笑~~~：）