 Okay, so let's try to balance this equation. So it's given to us iron, oxygen, iron oxide, okay? So if we look here, we see, well, one iron on this side, two iron on this side, right? So iron is in balance, and we've got two oxygens here and three oxygens here. So neither one of them is balanced. Okay, on this one, I would actually balance oxygen first, okay? So let's balance oxygen first. So we want to go to the side with more oxygens, okay? So we have three there and two there. So we're going to have to get something that's a multiple of both of those, okay? So six, right? Yeah, that's a good thing. So we go three, how do we get six out of that? We put a two there, right? So how do we get six out of this? We put a three there. So now we've got how many irons? Two times two is four. We've only got one over here. So now all we've got to do is put a four there, and we've balanced our equation.