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buithimyduyen2006
2 năm trước
2, Hai thùng dầu chứa tất cả 211 lít,sau khi lấy ra ở mỗi thùng một số lít dầu bằng nhau thì thùng thứ nhất còn lại 85 lít, thùng thứ hai còn lại 46 lít. Tính số dầu lúc đầu ở mỗi thùng? Mong các bạn giúp mk nha thanks :33
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