简算(把过程写出来)

问题描述:

简算(把过程写出来)
9*2000/2001*1949
不小心打错了,应该是9+(2000/2001)*1949 ,"*"是乘号,/是分数线

9+(2000/2001)*1949
=9+[1-(1/2001)]*1949
=9+1949-(1949/2001)
=1958-(1949/2001)
=1957+[1-(1949/2001)]
=1957+[(2001-1949)/2001]
=1957+(52/2001)
=1957又52/2001