Respuesta :

[tex]\frac{1}{detA}\begin{bmatrix}{d} & {-b} \\ {-c} & {a}\end{bmatrix}[/tex]

if you replace it in that order, it should give you the answer

[tex]\begin{bmatrix}{2} & {-3} \\ {-3} & {5}\end{bmatrix}[/tex]

RELAXING NOICE
Relax