x,y,z满足等式(3x+4y)/2=(6x+5y)/3=(4x-y+13z)/2,那么(x+2y+z)/(2x+3y-
x,y,z满足等式(3x+4y)/2=(6x+5y)/3=(4x-y+13z)/2,那么(x+2y+z)/(2x+3y-
x,y,z,满足等式3x+4y/2=6x+5y/3=4x-y+13z/2,求x+2y+z/2x+3y-z的值
若有理数x、y、z满足等式(x-1)^2+(2x-y)^4+|x-3z|=0,求x、y、z的值
已知有理数x、y、z满足条件|x-z-2|+(3x-6y-7)^2+|3y+3z-4|=0,求x、y、z
(4x-2y-z)-{5x[8y-2y-(x+y)]-x+(3y-10z)]=? kuai
试证明(x+y-2z)+(y+z-2x)+(z+x-2y)=3(x+y-2z)(y+z-2x)(z+x-2y)
4x-3y-6z=0,x+2y-7z=0是一个方程组,那么x-y+z/x+y+z的值等于
2X+Y+Z=10,X+2Y+Z=-6,X+Y+2Z=8 5X+4Y-3Y=13,2X-3Y+7Z=19,3X-Y=2X
已知x,y,z满足方程组:4x-5y+2z=o;x+4y-3x=0,求x:y:z的值
x/2=y/3=z/5 x+3y-z/x-3y+z
{2x+3y-4z=-5 x+y+z=6 x-y+3z=10
2x+5y+4z=6,3x+y-7z=-4,x+y-z=?