1/6+1/12+1/36+1/66+1/99=?123
来源：学生作业帮助网 编辑：六六作业网 时间：2024/12/19 01:56:18
1/6+1/12+1/36+1/66+1/99=?1231/6+1/12+1/36+1/66+1/99=?1231/6+1/12+1/36+1/66+1/99=?1231/6+1/12+1/36+1/
1/6+1/12+1/36+1/66+1/99=?123
1/6+1/12+1/36+1/66+1/99=?
123
1/6+1/12+1/36+1/66+1/99=?123
1/6+1/12+1/36+1/66+1/99
=(1/6+1/66)+(1/12+1/36)+1/99
=2/11+1/9+1/99
=10/33
(2+4+6)/2=6黑球
1/6+1/12+1/36=5/18
1/66+1/99=5/(18*11)
5/(18*11)+5/18=10/33
先乘除，后加减