Tủ sách nhà trường có hai ngăn . ngăn thứ nhất có số sách bằng \(\frac{2}{3}\)số sách ngăn thứ hai . Nếu xếp thêm vào ngăn thứ nhất thêm 80 cuốn sách và ngăn thứ hai 40 cuốn sách thì số sách ở ngăn thứ nhất bằng \(\frac{3}{4}\)số sách ở ngăn thứ hai . Hỏi ban đầu mỗi ngăn tủ có bao nhiêu cuốn sách ?
Các bạn hãy giải ra chi tiết và làm thật nhanh nhé !
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