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(5-1/25)/0.25/0.01=?
人气:460 ℃ 时间:2020-08-29 00:16:38
解答
(5-1/25)/0.25/0.01
=(5-1/25)/(1/4)/(1/100)
=5×400-1/25×400
=2000-16
=1984
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