You can solve it, but which variable do you wish to solve for?
Also you can simplfy it
$\displaystyle KYX + KYX = YYP $
$\displaystyle 2KYX = YYP $
$\displaystyle 2KX = YP $
Since this is the Linear and Abstract Algebra forum we must assume that at the very least these entities are matrices, in which case they do not commute! (at least not unless we are told that they do)