X=3/10除以3/5 X=3/10X5/3X=2
X=(3/10)*(5/3)=1/2
X＝1／2 X等于二分之一
3/10 / x = 3/51/x = 3/5 *10/3 = 2x = 2
3/x=6 x=1/2
