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简便计算:1.36-1 2/7+2.64-5/7
人气:477 ℃ 时间:2020-04-21 09:47:59
解答
1.36-1 2/7+2.64-5/7
=1.36+2.64-(1又2/7+5/7)
=4-2
=2
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