答：
(1/3)÷(2/3-2/5)×(3/5)
=(1/3)×(3/5)÷(2/3-2/5)
=(1/5)÷(2/3-2/5)
=1÷[(2/3)×5-(2/5)×5]
=1÷(10/3-2)
=1÷(4/3)
=3/4
猜你喜欢
- 1尽管对什么关联词
- 2黑格尔的绝对精神可以用进化论来解释么?
- 3we all like to see someone
- 4英语翻译
- 5his teacher looks very beautiful 这句话对吗
- 6It is the harvest time.The farmers are (b---) getting in the crops
- 7一个游泳池,有两个水管,单开乙管12个小时注满全池,比单开甲管所用的时间多3/1,现在两管齐开几小时注满全池的9/7?
- 8没有单质的化学反应一定不是氧化还原反应吗?如果有,请列出方程式
- 9求罗马数字的1到20,
- 10＿for their help ,we would not have overcome the difficulties