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tinhnhi.pk
2 năm trước
Lớp 6A có $\frac{3}{4}$ số học sinh đạt loại giỏi và số h/s đạt loại giỏi nhiều gấp 4 lần số h/s đạt loại khá. còn lại 4 h/s đạt loại trung bình ( ko có học sinh loại yếu, kém ) a, Lớp 6A có bn học sinh? b, Tính số h/s giỏi, khá của lớp 6A
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