Respuesta :

You combine like terms (anything with an x)

So the final answer is: 3x +4y
Let's simplify step-by-step.

2x+x+4y


Combine Like Terms:

=2x+x+4y=(2x+x)+(4y)=3x+4y

The correct answer is 
3x+4y

I hope that helped you! :)