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anhtuzed9
2 năm trước
a) Tìm các cặp số nguyên ( x , y ) thỏa mãn : x + 2y = 3xy + 3 b) Cho A = 1/2+1/3+...+1/2017 và B = 1/2016+2/2015+...+2015/2+2016/1
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