2014*2014⼀2015用简便方法怎么做

2024-12-16 14:58:16
推荐回答(2个)
回答1:

2014*2014/2015
=(2015-1)*2014/2015
=2015*2014/2015-1*2014/2015
=2014-2014/2015
=2013又1/2015

回答2:

2014*2014/2015
=2014x(1-1/2015)
=2014-2014/2015
=2013又1/2015