(363+411x362)/(363x411-48) 的简算
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(363+411x362)/(363x411-48) 的简算
(363+411x362)/(363x411-48)=[411x(363-1)+363]/(363x411-48)=[411x363-411+363]/(363x411-48)=[411x363-48]/(363x411-48)=1
(363+411x362)/(363x411-48)=(363+411x362)/(362x411+411-48) =(363+411x362)/(362x411+363)=1