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(2m-4/3-m)/(m+2-m-2/5)
人气:357 ℃ 时间:2020-06-25 17:02:55
解答
(2m-4/3-m)/(m+2-m-2/5)
=(2m-m-4/3)/(m-m+2-2/5)
=(m-4/3)/(8/5)
=(m-4/3)×(5/8)
=5m/8-5/6
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