简算:(19/91+1919/9191+191919/919191)÷19191919/91919191
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 14:32:42
![简算:(19/91+1919/9191+191919/919191)÷19191919/91919191](/uploads/image/z/752438-38-8.jpg?t=%E7%AE%80%E7%AE%97%EF%BC%9A%EF%BC%8819%2F91%2B1919%2F9191%2B191919%2F919191%EF%BC%89%C3%B719191919%2F91919191)
简算:(19/91+1919/9191+191919/919191)÷19191919/91919191
简算:(19/91+1919/9191+191919/919191)÷19191919/91919191
简算:(19/91+1919/9191+191919/919191)÷19191919/91919191
(19/91+1919/9191+191919/919191)÷19191919/91919191
=19/91×3÷19/91
=3
-191919/919191-(-19191919/91919191)= -191919/919191-(-19191919/91919191) =-191919/919191+19191919/91919191 =-19*(10000+100+1)/91*(10000+