方程组X:Y:Z=4:7:8,X+Y+2Z=54 求XYZ
方程组X:Y:Z=4:7:8,X+Y+2Z=54 求XYZ
方程组:x-2y+4z=0,2x+3y-3z=0...xyz不等于0,求(2x+y-z)\(2x-y+z)
已知一方程组:x-3y+7z=0与x-2y+4z=0(xyz≠0),求x:y:z.
x*x+y*y+2z*z-2x+4y+4z+7=0,求xyz的值
已知XYZ满足方程组 X+Y-Z=6 Y+Z-X=2 Z+X-y=0 求X Y Z的值
已知xyz满足方程组x+4y-3z=0,求x:y:z的值 4x-5y+2z=0
已知方程组{2X-Y+3Z=0,X-3Y+Z=0(XYZ≠0),求3Y分之4X+2Z的值
已知方程组4x-y+3z=0 2x+y+6z=0且xyz不等于0,则x/y+y/z+z/x是多少
已知4x-3y+z=0,x+2y-8z=0,xyz不等于0,求x+y-z/x-y+2z的值
已知x+y-z/z=x-y+z/y=-x+y+z/x,且xyz不等于0,求分式[(x+y)(x+z)(y+z)]/xyz
已知方程组4x-3y-3z=0 x+3y+z=0(xyz不等于0),求x/y y/z的值
解方程组:x:y:z=4:7:8,x+y+2z=54