2001乘2000分之1999等于多少

问题描述:

2001乘2000分之1999等于多少

=(2000+1)(2000-1)/2000=2000-1/2000

(1+2000)*(1-1/2000)
=1-1/2000+2000-1
=1999又1999/2000

1999.9995

(2000+1)X1999/2000=1999又1999/2000

开心公主小丽
2001×(1999/2000)
=(2000+1)×(1999/2000)
=2000×(1999/2000)+1999/2000
=1999+1999/2000
=1999又1999/2000

2001* 1999/2000
=(2000+1)(2000-1)/2000
=(2000^2-1)/2000
=(4000000-1)/2000
=3999999/2000