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beomokseo
2 năm trước
Bài 9. Một khu vườn hình chữ nhật có chiều dài gấp 3 lần chiều rộng. Tính diện tích khu đất, biết rằng nếu giảm chiều dài đi 5m, tăng chiều rộng 5m thì diện tích tăng thêm 225m vuông
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