不是123154321除以12345*12345-12346*12344是123454321除以12345*12345-12346*12344
问题描述:
不是123154321除以12345*12345-12346*12344是123454321除以12345*12345-12346*12344
答
12346*12344=(12345+1)*(12345-1)=12345*12345-1
123154321/(12345*12345-12346*12344)=123154321