Question

$y - x = 2 \\ y + 2x = 1$


$y + 1 = - 2x \\ y - \frac{1}{4 } = \frac{1}{2} x$
$y + \frac{1}{4} x = - 1 \\ y + 1 = 2x$
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Answer 1

Respuesta:

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