..快60页的{x/2=y/3=z/4}{x+2y+3Z=80}
..快60页的{x/2=y/3=z/4}{x+2y+3Z=80}
x+y/2=z+x/3+y=z/4,x=2y+3z=60,求x,y,z的值
x+y/2=z+x/3+y=z/4,x+2y+3z=60,求x,y,z的值
试证明(x+y-2z)+(y+z-2x)+(z+x-2y)=3(x+y-2z)(y+z-2x)(z+x-2y)
解方程组2x+3y+z=38.3x+4y+2z=56.4x+5y+z=66 快,我会追加分分的
x=y/z=z/3,x+y+z =12,求2x+3y+4z是多少,
x/3=y/4=z/5,求x+y+z/3x-2y+z的值,
若x/3=y/4=z/5,求x+y+z/3x-2y+z的值.
已知2x=3y=4z求2x-y+z分之x+y+z的值
若x:y:z=2:3:4,求x+y+z/x-2y+3z的值
x:y:z=2:3:4 求 3x+2y-z/x+y+z 的值
已知x:y:z=2:3:4,且x-y+z=36,求x+y+z的值.