求lingo大神

帮我看一下这个哪里不对吧😱
model:
min=d1;
2000*(10-10*0.1+x1)+1500*(12-x1+x2)+1000*(15-x2+x3)+d12-d1=60000;
end
model:
min=d2+d3+d4;
2000*(10-10*0.1+x1)+1500*(12-x1+x2)+1000*(15-x2+x3)+d12-d1=60000;
10*(1-0.1)+x1+d22-d2=12;
12-x1+x2+d32-d3=15;
15-x2+x3+d42-d4=15;
end
model:
min=d52+d62;
2000*(10-10*0.1+x1)+1500*(12-x1+x2)+1000*(15-x2+x3)+d12-d1=60000;
x1+d52-d5=12*0.2;
x2+d62-d6=15*0.2;
end