jbc车架哪里有卖:求助一道数学题!
来源:百度文库 编辑:杭州交通信息网 时间:2024/05/06 02:19:15
简便计算
9/17*(11/14除以11/17)*8/11+5/14=
9/17*(11/14除以11/17)*8/11+5/14=
9/17*(11/14除以11/17)*8/11+5/14
=9/17*11/14*17/11*8/11+5/14
=9/14*8/11+5/14
=9/14*8/11+(1-9/14)
=9/14*8/11-9/14+1
=9/14(8/11-1)+1
=1-27/154
=127/154
拿草稿纸
一步一步算,本来就很简单
真蠢,不想说太难听。
9/17*(11/14/11/17)*8/11+5/14
=9/17*11/14*17/11*8/11+5/14
=9/14*8/11+5/14
=9/14*8/11+(1-9/14)
=9/14*8/11-9/14+1
=9/14(8/11-1)+1
=1-27/154
=127/154