若xyz不等于0,且4x-5y+2z=0,x+4y-3z=0,求x:y:z的值.
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若xyz不等于0,且4x-5y+2z=0,x+4y-3z=0,求x:y:z的值.
若xyz不等于0,且4x-5y+2z=0,x+4y-3z=0,求x:y:z的值.
若xyz不等于0,且4x-5y+2z=0,x+4y-3z=0,求x:y:z的值.
4X-5Y+2Z=0 (1)
X+4Y-3Z=0 (2)
(1)-(2)*4
-21Y+14Z=0
Y=2/3 Z
代入(1)得
X=1/3 Z
X:Y:Z=1:2:3
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