2/3+1/6+1/9+1/12+1/15+1/18

来源:学生作业帮助网 编辑:六六作业网 时间:2025/02/02 19:19:00
2/3+1/6+1/9+1/12+1/15+1/182/3+1/6+1/9+1/12+1/15+1/182/3+1/6+1/9+1/12+1/15+1/182/3+1/6+1/9+1/18=1(1/9

2/3+1/6+1/9+1/12+1/15+1/18
2/3+1/6+1/9+1/12+1/15+1/18

2/3+1/6+1/9+1/12+1/15+1/18
2/3+1/6+1/9+1/18=1 (1/9+1/18=1/6+1/6=1/3+2/3=1)
1/12+1/15=3/20