20x+3y+2z=8239x+5y+3z=152要求的是2x+2y+2z
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20x+3y+2z=8239x+5y+3z=152要求的是2x+2y+2z
20x+3y+2z=82
39x+5y+3z=152
要求的是2x+2y+2z
20x+3y+2z=8239x+5y+3z=152要求的是2x+2y+2z
少一个吧,两个解不出三个未知数
兄弟,三元一次方程想求具体值至少也得三个方程吧,怎么会只有两个方程?
初一的?
x/2=y/3=z/5 x+3y-z/x-3y+z
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x+y-z=5 2x+3y+z=10 x-2y-z=20 速解,
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已知x/y+z=y/x+z=z/x+y,分式(x+2y+3z)/(2x+5y-2c)有意义时的值
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x+y+z=35 2x-y=5 y/3=z/2 求x,y,z
(4x-2y-z)-{5x-[8y-2z-(x+y)]-2(3y-10z)}=?好难啊