You can't solve that one for x. Algebra was hard for me at first, learning to think using variables and equations. Once I caught on, I loved it, went all the way with Plane Geometry, Algebra I and II, Solid Geometry, Trigonometry, Analytic Geometry and Calculus I. Wish I'd gone further in Calculus. I started having trouble with derivatives and didn't put enough effort into it. Now I see why it might be nice to be able to figure the area under a curve and whatever else it's useful for. Some of the calculus is used in computer programming, probably a lot of it.
I always felt it was important that the instructor should tell students why we are going to learn something and how to get there. I would figure it out for myself partway through.
I do use simple algebra quite often and sometimes a little geometry. I have limitations though. I missed a problem about angular velocity on a test. To this day, I don't understand it.
I showed my engineer father, and he had it worked out like it was nothing.