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75*4.67+52.3*7.5+7.5
人气:260 ℃ 时间:2020-05-10 15:09:20
解答
75*4.67+52.3*7.5+7.5
=7.5*46.7+52.3*7.5+7.5
=7.5*(46.7+52.3+1)
=7.5*100
=750
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