3x+2y+z=315 x+2y+3z=285怎么解
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3x+2y+z=315x+2y+3z=285怎么解3x+2y+z=315x+2y+3z=285怎么解3x+2y+z=315x+2y+3z=285怎么解把两个方程加在一起,就是等于4x+4y+4z等于6
3x+2y+z=315 x+2y+3z=285怎么解
3x+2y+z=315 x+2y+3z=285怎么解
3x+2y+z=315 x+2y+3z=285怎么解
把两个方程加在一起,就是等于4x+4y+4z等于600所以,x+y+z等于300,
无解
晚上我发给你
3x+2y+z=315
x+2y+3z=285
(3x+2y+z)+(x+2y+3z)=315+285
4*(x+y+z)=600
x+y+z=150元
无解
还缺一个方程的
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