Diketahui matriks A= ![\left[\begin{array}{ccc}-9&-6\\8&5\\\end{array}\right]](https://tex.z-dn.net/?f=+%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-9%26-6%5C%5C8%265%5C%5C%5Cend%7Barray%7D%5Cright%5D+ "\left[\begin{array}{ccc}-9&-6\\8&5\\\end{array}\right]")
dan B=![\left[\begin{array}{ccc}6&3\\4&1\\\end{array}\right]](https://tex.z-dn.net/?f=+%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D6%263%5C%5C4%261%5C%5C%5Cend%7Barray%7D%5Cright%5D+ "\left[\begin{array}{ccc}6&3\\4&1\\\end{array}\right]")
. matriks X yang berordo 2x2 memenuhi pers AX=B determinan dr matriks X adalah
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det X = 2 .(- 5) - (3 . -4)
= - 10 + 12
= 2