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duongtkh100
2 năm trước
Giúp vs ạ. Cho hệ hệ pt: {(m-1)x +y=2; x+2y=2 Tìm tất cả các giá trị nguyên của m để hệ pt có nghiêm (x;y), tronh đó x,y là các số nguyên.
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