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Toán Lớp 6: Bài 1: tìm số nguyên x,y biết (x-2)(y+1)=3 xy + y + x +1=5 xy+3y+x=2

Home/ Toán Lớp 6: Bài 1: tìm số nguyên x,y biết (x-2)(y+1)=3 xy + y + x +1=5 xy+3y+x=2

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