1/4+1/28+1/70+1/130

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/29 02:13:38
1/4+1/28+1/70+1/130

1/4+1/28+1/70+1/130
1/4+1/28+1/70+1/130

1/4+1/28+1/70+1/130
1/4+1/28+1/70+1/130=2/7+1/70+1/130=3/10+1/130=4/13