-199.8416÷负2/5等于多少?
-199.8416÷负2/5等于多少?
日期：2022-02-15 14:37:53 人气：1
(-199.8416)÷(-2/5)
= 199.8416×5/2
= (200-0.1584)×5/2
= 200×5/2-0.1584×5/2
= 500 - 0.396
= 499.604
= 199.8416×5/2
= (200-0.1584)×5/2
= 200×5/2-0.1584×5/2
= 500 - 0.396
= 499.604