x+y+z=22,3x+y=47,x=4z+2怎么解

x+y/2=z+x/3=y+z/4 x+y+z=27 (x+y-z)(x-y+z)= x+2y=3x+2z=4y+z 求x:y:z x,y,z不是0.3z=4y,z=3x求（x+y）：（x+z）. 已知(x+y)(x+z)=x,(y+z)(y+x)=2y,(z+x)(z+y)=3z,求x,y,z (4x-2y-z)-{5x-[8y-2z-(x-2y)]-x-(3y-10z)}=? 试证明(x+y-2z)+(y+z-2x)+(z+x-2y)=3(x+y-2z)(y+z-2x)(z+x-2y) 4x-y+z=25,6x-z+2y=22,x+3y+z=-2 {4x-y+z=25,6x-z+2y=22,x+3y+z=-2 蟹蟹 (x+y):(y+z):(z+x)=3:4:5 3x+y-z=-4已知(x+y):(y+z):(z+x)=3:4:5 ；3x+y-z=-4求x y z 解方程组x:y:z=2:3:4;2x+y+z=22{x:y:z=2:3:4{2X+y+z=22 4x-y+z=25,6x-z+2y=22,x+3y+z=-2,求x,y,z (4x-2y-z)-{5x[8y-2y-(x+y)]-x+(3y-10z)]=? kuaihuajian X+Y+Z=? x/y=(x+z)/(y+z)y/z=(x+y)/(x+z) 2x+z=10 x+y-z=4 3x-y-z=0 z+=x>y?++x: {x+y+z=12 x+2y+5z=22 x=4y