"o friptură, două fripturi"

Translation: a steak, two steaks

[blDraX]

How do I know whether to build the plural of female words with -i or -e?

[Andrei926539]

Here's a list http://vreausareusesc.ro/pluralul-substantivelor/. But you basically need to memorize them as they are. There is no helpful rule. :D

[JohannaFei8]

why is that wrong when you have the same translation?