gimana caranya ya, saya lupa :)

B = [tex] \left[\begin{array}{cc}-3&-2\\4&2\end{array}\right] [/tex]
[tex] B^{-1} [/tex] = [tex] \frac{1}{-3(2) - (-2)(4)} [/tex] × [tex] \left[\begin{array}{cc}2&2\\-4&-3\end{array}\right] [/tex] = [tex] \frac{1}{2} [/tex] × [tex] \left[\begin{array}{cc}2&2\\-4&-3\end{array}\right] [/tex] = [tex] \left[\begin{array}{cc}1&1\\-2&- \frac{3}{2} \end{array}\right] [/tex]