So five times this guy gives me this, five times this guy gives me this guy five times, two H gives me ten H, and five times this guy gives me ten electrons. I multiply this whole guy by two. I get two of these guys plus 16 of H pluses plus ten of east equals two of these guys and eight of these guys. Now, when I go from step six to seven, I basically want to add these equations up, right? I want to add my two half reactions. So I add all the guys on the left side, and then I add all the guys on the right side.