若x/4=y/3=z/4,且x+y+z=12,求2x+3y+4z
若x/4=y/3=z/4,且x+y+z=12,求2x+3y+4z
x=y/z=z/3,x+y+z =12,求2x+3y+4z是多少,
已知x+y/2=y+z/3=z+x/4,且x+2y+z=12,求x-2y+z的值
若x:y:z=3:4:5且x+y+z=24,求x、y、z的值
若X:y:Z=3:4:5,且X+Y+Z=24,求X、Y、Z的值
已知x:y:z=2:3:4,且x-y+z=36,求x+y+z的值.
已知x:y:z=2:3:4,且x+y+z=18,求x,y,z的值
已知x/2=y/3=z/5,且3x+4z-2y=40,求x、y、z的值﹔详解
已知x/2=y/3=z/4,且x+y+z不等于0,求2x+3y-4z/x+y+z的值
已知3x-2y-5z=0,2x-5y+4z=0,且x,y,z均不为0,求3x*x+2y*y+5z*z/5x*x+y*y-
如果x+4/3=y+z/2=z+8/4,且x+y+z=12,求x,y,z的值.
已知x+4y=6z,且3x减4y加2z=0,求 2x+3/z 的值