若x+9/y=3,y+1/z=3,则z+1/x的值为
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若x+9/y=3,y+1/z=3,则z+1/x的值为
若x+9/y=3,y+1/z=3,则z+1/x的值为
若x+9/y=3,y+1/z=3,则z+1/x的值为
由y+1/z=3得:y=3-1/z,代入x+9/y=3,
得:x+9/(3-1/z)=3,
两边同时乘以(3-1/z),得
x(3-1/z)+9=3(3-1/z),
3x - x/z =-3/z
两边同时乘以z,得
x-3xz=3
两边同时除以3x,得
1/3-z=1/x
所以:z+1/x=1/3
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