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trinhthuhuyen1409
2 năm trước
Một mảnh đất hình chữ nhật có chiều dài gấp đôi chiều rộng. Nếu tăng chiều rộng 5m và điện tích mảnh đất tăng 250 mét vuông. Tích diện tích mảnh đất lúc đầu.
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