已知x+4y=6z,且3x-4y+2z=0,求2x+3y除以z的值

已知x除以2=y除以3=z除以4,且x≠0,求x+y+z除以x-2y+3z的值, 已知x+4y=6z,且3x-4y+2z=0,求2x+3y除以z的值 已知2x+3y-4z=0,3x+4y+5z=0,求x+y+z/（除以）x-y+z的值. 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4x-3y-6z=0,x+2y-7z=0,且x、y、z都不为0,求(3x+2y+z)/(x+2y+3z)的值 快帮求 已知4x-3y-6z=0 ① ,x+2y-7z=0 ②,且x,y,z均不为0,求3x+2y+z÷x+2y+3z的值 已知4x-3y-6z=0,x+2y-7z=0,且x,y,z≠0,求2x+3y+6z/x+5y+5z的值. 已知x+y/2=y+z/3=z+x/4,且x+2y+z=12,求x-2y+z的值 已知2x+3y-4z=0,3x+4y-5z=0.求x+y+z除以x-y+z, 已知x/4=y/5=z/6 求x+y+z/3x-2y+z的值