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数学
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若a+b=4ab 则代数式2a-ab+2b/2ab值为?
人气：485 ℃ 时间：2020-02-04 05:35:31
解答
2a-ab+2b/2ab
=[2(a+b)-ab]/2ab
=(2*4ab-ab)/2ab
=7ab/2ab
=7/2
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