Yes seems like the idea is not tough but I'm weaker than a 3rd grader.

I don't know man, I've forever been afraid to algebra. I don't know but whenever I see x,y it turns me off. Bye I got only 20% in my last exam that I took for Algebra way back in 2002. If it were not for some behaviour mathematics and arithmetic in another maths paper I would've never passed out high school.