498/382*381/382+382/382*498/382-116/382简便运算
问题描述:
498/382*381/382+382/382*498/382-116/382简便运算
答
498/382*381/382+382/382*498/382-116/382=498/382*381/382+382/382*498/382-116/382*383/382=(498*381+382*498-116*383)/(382*382)=[(498+498-116)*382-498-116)]/(382*382)=[(996-116-1)*382]/(382*382)=879/382