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trangnoo30112k2
2 năm trước
một xe đạp khởi hành từ điểm A với vận tốc 35km/h. sau 6 giờ một xe hơi đuổi theo với vận tốc 60km/ h. Hỏi xe hơi chạy trong bao lâu thì đuổi kịp xe đạp? Giúp mình với Giải bài toán bằng cách lập phương trình nha
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