# Penerapan Invers Matriks dalam Sistem Persamaan Linear Dua Variabel

## Math Wajib Kelas 12 [K-13] / Matriks

#### Contoh Soal

Bentuk matriks dari [% \begin{cases} x + 3y = 8 \\ x + y = 2 \\ \end{cases} %] adalah ....

• [% \left( {\begin{array}{*{20}{c}}1&3\\\ 1&1\end{array}} \right)\left( {\begin{array}{*{20}{c}}x\\\ y\end{array}} \right) = \left( {\begin{array}{*{20}{c}}8\\\ 2\end{array}} \right) %]
• [% \left( {\begin{array}{*{20}{c}}1&1\\\ 3&1\end{array}} \right)\left( {\begin{array}{*{20}{c}}x\\\ y\end{array}} \right) = \left( {\begin{array}{*{20}{c}}8\\\ 2\end{array}} \right) %]
• [% \left( {\begin{array}{*{20}{c}}x\\\ y\end{array}} \right)\left( {\begin{array}{*{20}{c}}1&1\\\ 3&1\end{array}} \right) = \left( {\begin{array}{*{20}{c}}8\\\ 2\end{array}} \right) %]
• [% \left( {\begin{array}{*{20}{c}}x&y\end{array}} \right)\left( {\begin{array}{*{20}{c}}1&1\\\ 3&1\end{array}} \right) = \left( {\begin{array}{*{20}{c}}8\\\ 2\end{array}} \right) %]
• [% \left( {\begin{array}{*{20}{c}}x&y\end{array}} \right)\left( {\begin{array}{*{20}{c}}1&3\\\ 1&1\end{array}} \right) = \left( {\begin{array}{*{20}{c}}8\\\ 2\end{array}} \right) %]

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