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
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![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](/uploads/image/z/472539-3-9.jpg?t=%E5%B7%B2%E7%9F%A54x-3y-6z%3D0%2Cx%2B2y-7z%3D0%2C%E4%B8%94x%2Cy%2Cz%E9%83%BD%E4%B8%8D%E4%B8%BA0%2C%E6%B1%82%283x%2B2y%2Bz%29%2F%28x%2B2y%2B3z%29%E7%9A%84%E5%80%BC)
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
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
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
4x-3y-6z=0与X+2y-7z=0连力方程组解得x=3z y=2z
代入(3x+2y+z)/(x+2y+3z) 代入得(3*3z+2*2z+z)/(3z+2*2z+3z)
解得为得7/5