Advanced equation solving

Most of us kow how to solve a 1st degree equation with only one variable. It's pretty simple, but it can be tedious. With this guy's method, we can "solve" it much faster:


How could we have been so blind for all this years? All we needed to do was to eliminate the = sign, and everything becomes much simpler!

...Although, what does "x 4" means? x=4? x=4x? x and 4 are friends and that's why they live together inside a badly drawn rectangle? I really don't know, but that's probably due to the high level of math knowledge that this equation method solving requires...