Find A,find B and solve the system using the inverse that is given for the coefficient matrix

SOLUTION
Given the question in the image, the following are the solution steps to answer the question.
STEP 1: Write the given equations
[tex]\begin{gathered} w-x+2y=-4 \\ x-y+z=4 \\ -w+x-y+z=-3 \\ -x+y-2z=2 \end{gathered}[/tex]STEP 2: Find the determinant
Determinant is giv