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chaunguyenngoctran1603
2 năm trước
giải các bài toán sau bằng cách lập phương trình a) Khi mới nhận lớp 8A, cô chủ nhiệm dự định chia lớp thành 3 tổ có số học sinh như nhau. Nhưng sau đó lớp nhận thêm 4 học sinh nữa. Do đó cô chủ nhiệm đã chia đều số học sinh của lớp thành 4 tổ. Hỏi lớp 8A hiện có bao nhiêu học sinh . Biết rằng so với phương án dự định ban đầu, số học sinh của mỗi tổ hiện nay có ít hơn 2 học sinh.
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