(90+1/88)*1/89怎么简便计算啊

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/08 18:17:28
(90+1/88)*1/89怎么简便计算啊

(90+1/88)*1/89怎么简便计算啊
(90+1/88)*1/89怎么简便计算啊

(90+1/88)*1/89怎么简便计算啊
(90+1/88)*1/89
=(89+1+1/88)*1/89
=89*1/89+89/88*1/89
=1+1/88
=89/88

(90+1/88)×1/89
=(89+1+1/88)×1/89
=(89+89/88)×1/89
=89×1/89+89/88×1/89
=1+1/88
=89/88

原式=(89+1+1/88)*1/89=(89+89/88)/89=1+1/88=89/88

(90+1/88)*1/89
=(90+1/88+1-1)*1/89
=(89+89/88)*1/89
=1+1/88
=89/88