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[7/8-(1/3+1/6)]/9/4怎么简算
人气:167 ℃ 时间:2020-04-16 05:57:33
解答
[7/8-(1/3+1/6)]/9/4
=[7/8-(3/6)]/9/4
=[21/24-12/24]/9/4
=9/24x4/9
=4/24
=1/6
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