x-2+z/9=2x+y+3z/10=-(3x+2y-4z)/(-3)=1,怎么解

(x-2y+z)/9=(2x+y+3z)/10=-(3x+2y-4z)/3=1 连等,求x,y,z, 试证明(x+y-2z)+(y+z-2x)+(z+x-2y)=3(x+y-2z)(y+z-2x)(z+x-2y) 解方程组2x+y-3z=1,x-2y+z=6,3x-y+2z=9求x,y,z的值 解方程一;{x+y-z=6,x-3y+2z=1,3x+2y-z=-7.②{3x+4z=7,2x+3y+z=9,5x-9y x-2+z/9=2x+y+3z/10=-(3x+2y-4z)/(-3)=1,怎么解 x=y/z=z/3,x+y+z ＝12,求2x+3y+4z是多少, x/2=y/3=z/5 x+3y-z/x-3y+z 解方程组1、4x+9y=12,3y-2z=1,2x+6z=32、3x-y+2z=3,2x+y-3z=11,x+y+z=1 三元一次方程组数学题x+2y+2z=33x+y-2z=72x+3y-2z=10x-y=2z-x=3y+z=-1x-y-z 如果,根号x-3+| y-2 |+z^2=2z-1 求 （x+z)^y 3道高数题,1,函数F(x,y,z)=(e^x) * y * (z^2) ,其中z=z(x,y)是由x+y+z+xyz= x+2y+3z=10,x-y+4z=10,x+3y+2z=2