(METODE INVERS-ADJOIN) tentukan sistem penyelesaian sistem persamaan linier berikut dengan metode invers-adjoin
2x+y-z=1
x+2y-z=2
-x-y+2z=3
2x+y-z=1
x+2y-z=2
-x-y+2z=3
petero14
![\frac{1}{ad-bc} \left[\begin{array}{ccc}d&-b\\-c&a\end{array}\right]](https://tex.z-dn.net/?f=++%5Cfrac%7B1%7D%7Bad-bc%7D++++%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7Dd%26-b%5C%5C-c%26a%5Cend%7Barray%7D%5Cright%5D+ "\frac{1}{ad-bc} \left[\begin{array}{ccc}d&-b\\-c&a\end{array}\right]")
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