Toán Lớp 9: Giải hệ phương trình
1) (x-2)(y+1)=xy
(x+8)(y-2)=xy
2) 1/x-1/y=1
3/x-4/y=5
3) x-y=3
x ²+y ²=5
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Toán Lớp 9: Giải hệ phương trình
1) (x-2)(y+1)=xy
(x+8)(y-2)=xy
2) 1/x-1/y=1
3/x-4/y=5
3) x-y=3
x ²+y ²=5
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