10⼀17+9⼀23怎么算的?

2024-12-25 20:51:41
推荐回答(2个)
回答1:

通分,383/391

回答2:

10/17+9/23
=(10×23)/(17×23)+(9×17)/(17×23)
=230/391+153/391
=383/391