関連ワード:  is a negative times a positive a negative or positive    is a negative divided by a positive a negative or positive    is a negative number times a positive number negative or positive    is a negative multiplied by a positive a positive    is a negative times a positive equal a positive    is a negative times a positive always a positive    does a negative times a positive equal a positive or negative    why is a negative times a positive a negative  
結果 : is a negative times a positive a negative or positive