简便计算,如下,我是学渣

来源:学生作业学帮网 编辑:学帮网 时间:2024/05/27 10:07:36

简便计算,如下,我是学渣
 

243/745 0.3248663102

5/11X9/24+9/11X7/24
=5/11X9/24+7/11X9/24
=(5/11+7/11)X3/8
=12/11X3/8
=36/88
=9/22