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37/63÷7+1/7×26/63 简便计算
人气:456 ℃ 时间:2020-05-06 12:10:29
解答
37/63÷7+1/7×26/63
=37/63×1/7+1/7×26/63
=1/7×(37/63+26/63)
=1/7×1
=1/7
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