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(1/12-1/4)/1/2+1/3的简便方法
人气:341 ℃ 时间:2020-04-10 09:16:07
解答
(1/12-1/4)/1/2+1/3
=(1/12-1/4)×2+1/3
=1/6-1/2+1/3
=1/6+1/3-1/2
=1/2-1/2
=0
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