Solve the matrix equation A X + B = C {\displaystyle AX+B=C} for matrix X {\displaystyle X} , where
A = [ 1 3 1 4 ] {\displaystyle A={\begin{bmatrix}1&3\\1&4\end{bmatrix}}} , B = [ 1 1 − 1 − 2 ] {\displaystyle B={\begin{bmatrix}1&1\\-1&-2\end{bmatrix}}} . C = [ 3 2 1 1 ] {\displaystyle C={\begin{bmatrix}3&2\\1&1\end{bmatrix}}}
