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2 năm trước
một khu vườn hình chữ nhật có chu vi là 234m. Nếu giảm giảm chiều dài đi 15% và tăng chiều rộng thêm 10% thì khu đất trở thành hình vuông. Tìm chiều dài và chiều rộng của khu vườn.
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