chong đợt thi đua chào mừng xuân mới và chào mừng ngày thành lập đảng 3/2 ba lớp 7a 7b và 7c đã thi đua hái được những bông hoa điểm tốt của mỗi lớp 7a 7b và 7c hái được lần lượt tỉ lệ với 2,3 và 5 .tính số hoa mỗi lớp đã hái được trong đợt thi đua đó, biết rằng lớp 7c hái được nhiều hơn 7a 84 bông.

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