Finite Math Examples

$x \cdot 1 - 2 x \cdot 2 + x \cdot 3 = - 3$ , $2 x \cdot 1 + x \cdot 2 - 2 x \cdot 3 = 2$ , $x \cdot 1 + 3 x \cdot 2 - 3 x \cdot 3 = 5$

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$x \cdot 1 - 2 x \cdot 2 + x \cdot 3 = - 3, 2 x \cdot 1 + x \cdot 2 - 2 x \cdot 3 = 2, x \cdot 1 + 3 x \cdot 2 - 3 x \cdot 3 = 5$