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9.625除以2又3/2-4又8/5*8/3
人气:326 ℃ 时间:2020-06-08 03:35:10
解答
9.625除以2又3/2-4又8/5*8/3
=73/8除以7/2-28/5*8/3
=73/28-224/15
=(1095-6272)/420
=-5177/420
=-12又137/420
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