40八乘40七分之40六加40七分之一这道题怎么简算

40八乘40七分之40六加40七分之一这道题怎么简算
2025-06-21 10:08:19
推荐回答(1个)
回答1:

408x 406/407+1/407
=(407+1)x406/407+1/407
=407x406/407+406/407+1/407
=406+1
=407