-çok güsel kýslar bakalýmbizde böle bi araya gelebilecekmiyiz

-niye gelmiyelim geliriz herkez bi araya toklansýnda o zaman daha kalabalýk oluruz

nobody knows? pleeease

There is no punctuation in these sentences. I will write correct forms, then translations.

First, the correct forms:

- Çok güzel, kýzlar. Bakalým biz de böyle bir araya gelebilecek miyiz?

- Niye gelmeyelim? Geliriz. Herkes bir araya toplansýn da, o zaman daha kalabalýk oluruz.

Translations:

- Very good, girls. Let´s see if we can come together like that or not?

- Why can not? We can. Let everybody gather first, then we will be more crowded.

 Faruk - isn´t ´Niye gelmeyelim?´ ´Why not let us come?´ ??

No, it is like that.

For example:

-Let´s go to the cinema!

-Yeah, why not?

But it might be just "Why not?" if "Why can not?" is wrong. You are native in English, please correct me.

 Thanks Faruk - yes, we would just say ´Why not?´ meaning, in effect, ´good idea let´s go!´