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NhatDan
2 năm trước
Cho 1 số thập phân là A. Nếu dời dấu phẩy của A sang bên trái 1 chữ số ta đc B. Nếu dời dấu phẩy của B sang bên phải 2 chữ số ta đc C. Tổng của A và C là 746,79.Tìm B
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