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trinhthilannhung14062003
2 năm trước
Trong các số hữu tỉ sau, số nào là số hữu tỉ dương, số nào là số hữu tỉ âm, số nào không là số hữu tỉ dương cũng không là số hữu tỉ âm? -3/7; 2/3; 1/-5; -4; 0/-2; -3/-5
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