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数学
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|1/21-1/20|+|1/22-1/21|+|1/23-1/22|+…+|1/30-1/29|
| |是绝对值符号哦!
人气:247 ℃ 时间:2020-01-29 00:33:29
解答
|1/21-1/20|+|1/22-1/21|+|1/23-1/22|+…+|1/30-1/29|
=1/20-1/21+1/21-1/22+…+1/29-1/30
=1/20-1/30
=1/60
( |小数-大数|=大数-小数 )
加油!有什么不懂的再问,诚答!
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|21/1-20/1|+|22/1-21/21|+|23/1-22/1|+.+|30/1-29/1
计算:|1/21-1/20|+|1/22-1/21|+|1/23-1/22|...|1/30-1/29
计算:|21分之1-20分之1|+|22分之1-21分之1|+|23分之1-22分之1|+……+|30分之1-29分之1|=?
|1/21-1/20|+|1/22-1/21|+|1/23-1/22|+...|1/30-1/29| 急
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