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数学
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|1/101-1/100|+|1/102-1/101|-|1/102-1/100|=?
人气:233 ℃ 时间:2020-03-27 20:20:34
解答
原式=1/100-1/101+1/101-1/102-(1/100-1/102)
=1/100-1/100-1/101+1/101-1/102+1/102
=0
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