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thanhsuong14st
2 năm trước
cho ba số biết tổng của số thứ nhất và số thứ hai là 327 ,tổng của số thứ hai và số thứ ba là 349 ,tổng của số thứ ba và số thứ nhất là 268 . tìm số thứ nhất . các bạn làm nhanh hộ mình nha mình đang cần gấp
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