4○=2△,○=1/2△
3□=2△,□=2/3△
△+○+○+□=1600
△+1/2△+1/2△+2/3△=1600
△=600
□=400
○=300
由2△=3□=4○可知:△=2○,□=4/3○
由第二组等式可求:2○+4/3○+○+○=1600
○=300. △=600. □=400
2x=3y=4z;
x=3y/2;
z=3y/4;
x+2z+y=1600;
3y/2+2*3y/4+y=1600;
y=400;
x=600;
z=300;
设2△=3□=4○=12X
△=6X
□=4X
○=3X
最明了
△=2○
□=4/3□
△+○+○+□=2○+○+○+4/3○=1600
16/3○ = 1600
所以○ = 300
自己来吧