20-2/3-2/15-2/35-2/63-2/99=
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/08/14 01:17:35
20-2/3-2/15-2/35-2/63-2/99=
![20-2/3-2/15-2/35-2/63-2/99=](/uploads/image/z/5946168-48-8.jpg?t=20-2%2F3-2%2F15-2%2F35-2%2F63-2%2F99%3D)
19.090909090909090909
上式=20-(1-1/3+1/3-1/5+1/5-1/7+1/7-1/9+1/9-1/11)
=20-(1-1/11)
=20-10/11
=210/11
上式=20-(1-1/3+1/3-1/5+1/5-1/7+1/7-1/9+1/9-1/11)
=20-(1-1/11)
=20-10/11
=210/11
20-2/3-2/15-2/35-2/63-2/99=?
20-2/3-2/15-2/35-2/63-2/99=
2/3+2/15+2/35+2/63+2/99
简算题 3/2+15/2+35/2+63/2+99/2+143/2=?
2/3+2/15+2/35+2/63+2/99+2/143=?
简便计算:20-2/3-2/15-2/35-2/63-2/99
简算:20-2/3-2/15-2/35-2/63-2/99
20-3分之2-15分之2-35分之2-63分之2-99分之2
20- 2/3 -2/15 -2/35 -2/63 -2/99怎么简算
2/3+2/15+2/35+2/63+2/99=?
2/3+2/15+2/35+2/63+2/99=用简便方法
3/2+15/2+35/2+63/2+99/2=?