2x+3y+z=8 4x-y-z=10 x+2y-z=1

(4x-2y-z)-{5x-[8y-2z-(x-2y)]-x-(3y-10z)}=? (4x-2y-z)-{5x-[8y-2z-(x+y)]-2(3y-10z)}=?好难啊 X/10=Y/8=Z/9,则X+Y+Z/2Y-3Z 2x+z=10 x+y-z=4 3x-y-z=0 2x+3y+z=8 4x-y-z=10 x+2y-z=1 (4x-2y-z)-{5x[8y-2y-(x+y)]-x+(3y-10z)]=? kuaihuajian 6x-y-z=3 2x-4y+8z=5 3x-6y-z=10 y z 分别等于几?大虾 x+y/2=z+x/3=y+z/4 x+y+z=27 x+2y=3x+2z=4y+z 求x:y:z (x*x+2)(y*y+4)(z*z+8)=64xyz,求x,y,z {2x+y=10 {x-y+z=4 {3x-y-z=0 已知x-y/x+y=y+z/2(y-z)=z+x/3(z-x),求证8x+9y+5z=0THX.. 已知(x+y)(x+z)=x,(y+z)(y+x)=2y,(z+x)(z+y)=3z,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) x+2y+3z=10,x-y+4z=10,x+3y+2z=2 x+2y+3z=10,x-y+4z=10,x+3y+2z=2 4x+y+z=-3 2x+3y-4z=-10 x+2y-z=-1 x:y:z=3:4:5 2x-3y+2z=8 x-y-2z=?