Matrix Equation - Make X the Subject I'm having a complete mind blank here even though i'm pretty sure the solution is relatively easy.
I need to make X the subject of the following equation:
$$AB - AX = X $$
All i've done so far is:
$$A(B-X) = X$$
$$B-X = A^{-1} X$$
Not sure if thats right?
Thanks in advance.

Continuing with your expression, $B-X = A^{-1} X$, $B = (I+A^{-1}) X$, $X = (I+A^{-1})^{-1}B$.
