Im not a math master yet. I'm a physics major in calc. 3 at the moment and I am trying to help a couple friends in college algebra. They both have this conceptual problem of thinking they are "moving" stuff from one side of the equation. It is causing tons of sign mistakes and causing a lot of trouble with radicals and such. Does anyone have some good examples that show your just doing the same thing to both sides of the equation, or is the best way to do a lot of examples and make the "show all their work'? Thanks!