It's a simple difficult that I need help. I have a linq expression on C# that I'm trying to do but I don't know how to do that. 

In this expression I just need to add an "AND" or "&&" like the code below.

```
on comentListaDef.Id equals respostaComentListaDef.IdComentListaDef &&   
RespostaComentListaDef.IdAutor = 1072  

```