(x-2)(y+3)=xy (x-5)(y+2)=xy 解方程组(x-2)(y+3)=xy (x-5)(y+2)=xy 解方程组用加减消元法来解 不行的话用代入消元法
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(x-2)(y+3)=xy(x-5)(y+2)=xy解方程组(x-2)(y+3)=xy(x-5)(y+2)=xy解方程组用加减消元法来解不行的话用代入消元法(x-2)(y+3)=xy(x-5)(y+2
(x-2)(y+3)=xy (x-5)(y+2)=xy 解方程组(x-2)(y+3)=xy (x-5)(y+2)=xy 解方程组用加减消元法来解 不行的话用代入消元法
(x-2)(y+3)=xy (x-5)(y+2)=xy 解方程组
(x-2)(y+3)=xy (x-5)(y+2)=xy 解方程组
用加减消元法来解
不行的话用代入消元法
(x-2)(y+3)=xy (x-5)(y+2)=xy 解方程组(x-2)(y+3)=xy (x-5)(y+2)=xy 解方程组用加减消元法来解 不行的话用代入消元法
由(x-2)(y+3)=xy
(x-5)(y+2)=xy
得3x-2y-6=0
2x-5y-10=0
上面方程化为
6x-4y-12=0
6x-15y-30=0
两式相减得11y=-18,y=-18/11,代入任意方程得x=10/11
故x=10/11,y=-18/11.
uuyo家里
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