関連ワード:  a positive number multiplied by a negative number is always    a positive number times a negative number is sometimes negative    a positive number multiplied or divided by a negative number always comes out negative why    how do you multiply a positive number by a negative number    what happens when you multiply a positive number by a negative number    what is a negative multiplied by a positive    can a negative number be a multiple of a positive number  
結果 : a positive number multiplied by a negative number is always