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24hxoacmeo
2 năm trước
ai giúp mình trả lời bài chọn ý này mình cho 5 sao: 1. kết quả rút gọn của phân số -720/300 đến tố giản là: A: -72/30 B: 12/5 C:-12/5 D: -114/15 2. hỗn số -12/2/9 viết dưới dạng phân số bằng: A: -14/3 B:-24/9 C: -110/9 D: -14/9 3. kết quả rút gon của -18/24 + 1/1/7 - 45/21 bằng : A: -9/28 B:-7/4 C: 7/4 D: 9/28
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