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2 năm trước
Huhu ai chuyên toán giúp mình với ạ, mình hỏi cô giáo thì cô nói là phải dùng phương pháp thế nhiều lần mới ra, mình tịt ngòi luôn rồiiii giải hệ pt 1/x + 1/y = 3 và x + (1 + 3x) y = 6 Mình cảm ơn rất nhiều ạ
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