若x/3=y/4=z/7,则(3x+y+z)/y的值是
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
若x:y:z=3:4:6,则x-y+z分之x+y-z的值为?
若4x=7y+5z,2x+y=z,则x:y:z的值为
若x/3=y/4=z/5,求x+y+z/3x-2y+z的值.
已知x/2=y/4=z/7,求①x:y:z.②若2x+y+3z=58,分别求x,y,z的值.③求x+y/x+z的值.
若x:y:z=3:4:5=6,求x-y+z分之x+y-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
若x/2=y/3=z/4不等于0,求x+y+z/x+y-z的值
若x:y:z=2:3:4,求x+y+z/x-2y+3z的值
若3x+7y+z=5,4x+10y+z=3,则x+y+z=?
已知x+4y+3z=3x-2y-5z=0,求x+2y-z/2x-3y+7z的值