Respuesta :

[tex]\begin{gathered} 2x+y=8 \\ x-y=10 \end{gathered}[/tex]

This system can be written as the next matrix

[tex]\begin{bmatrix}{2} & {1} & {8} \\ {1} & {-1} & {10} \\ {} & {} & {}\end{bmatrix}[/tex]

The determinant of the homogeneous system is

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