This doesn't have anything to do with math in particular but for me whenever I find that I need to work something out I try explaining what I'm doing to someone else. I have found that trying to explain it helps my brain sort it. Even if you just say it out loud what you are doing maybe the little things will click easier and you won't miss them?
“What screws us up the most in life is the picture in our head of what it's supposed to be.”
Also if your signature makes my scrolling mess up "you're tacky and I hate you."
Also if your signature makes my scrolling mess up "you're tacky and I hate you."