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2 năm trước
B1' Tính hợp lý 1 [-37]+14+26+37 2 [-24]+6+10+24 3 15+23+[-25]+[-23] 4 60+33+[-50]+[-33] 5 [-16]+[-204]+[-14]+209 6 [-12]+[-13]+36+[-16] 7 -16+24+16-34 8 25+37-48-25-37 9 2575+37-2576-29 10 34+35+36+37-14-15-16-17. làm hết thì vote 5s 5 câu vote 3s cảm ơn trc nha
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