関連ワード:  does a negative minus a negative equal positive    does a negative times a negative equal positive    does a negative divided by a negative equal positive    does a negative minus a negative always equal a positive    will a negative times a negative equal a positive    can a negative times a negative equal a positive    why does a negative times a negative equal a positive number    does a negative number minus a negative number equal a positive number    in math does a negative times a negative equal a positive    why does negative minus negative equals positive  
結果 : does a negative minus a negative equal positive