2008+2007+2009/2008*2009-1

问题描述:

2008+2007+2009/2008*2009-1

2008+2007+2009/2008*2009-1
=2007*2+(2008+1)/2008*2009
=2007*2+(1+1/2008)*2009
=4014+2009+2009/2008
=6023+1又(1/2008)
=6024又(1/2008)