# Concept on material balance

I am a chemical engineering student learning about material balance, so the problem below will not be a ‘real’ one , but just an exercise for me to understand better.

This system below is not a reaction.

My question is: can I say that the overall material balance for this system is:

$$F1 + F2 + F3 = P1 + P2 + P3$$

I have this doubt because Feed 3 comes in after Product 1 and Product 2 have been removed. Does this matter at all?