1-1/2+1/6+1/12+1/20+1/30+1/42+1/36,能简便的要简便计算
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/04 03:56:15
![1-1/2+1/6+1/12+1/20+1/30+1/42+1/36,能简便的要简便计算](/uploads/image/z/248541-69-1.jpg?t=1-1%2F2%2B1%2F6%2B1%2F12%2B1%2F20%2B1%2F30%2B1%2F42%2B1%2F36%2C%E8%83%BD%E7%AE%80%E4%BE%BF%E7%9A%84%E8%A6%81%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97)
1-1/2+1/6+1/12+1/20+1/30+1/42+1/36,能简便的要简便计算
1-1/2+1/6+1/12+1/20+1/30+1/42+1/36,能简便的要简便计算
1-1/2+1/6+1/12+1/20+1/30+1/42+1/36,能简便的要简便计算
1-1/2+1/6+1/12+1/20+1/30+1/42+1/56
=1-1/2+1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6+1/6-1/7+1/7-1/8
=1-1/8
=7/8
最后是1/56吧
原式=1-1/2+1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6+1/6-1/7+1/7-1/8=1-1/8=7/8