Added multiple changes to the linear equations

Bodi, please try to understand the new type of coding..
Not everything has to be "position: absolute" and manually position
it.. Somethings are auto positioned… also when coding apps everything
has to be center-aligned… please try to study my linear equation code
as an example… and use it as an example in the future.. don't try to
overcomplicate things… Our slogan says "Simply Awesome" .. focus on the
SIMPLY.. try to think as simple as you can… always start with the
question: "How can I make this CODE as SIMPLE as possible in order to
make the INTERFACE look as AWESOME as possible?". Make sure to study
the way I wrote the new code… also when different elements have the
same CSS.. ALWAYS make them the same id (unless they need to be
different in JavaScript, which is another story)… Study my new code,
you have a lot of work to do…