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7x y 19 2x 3y 19

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-7x+y=-19 -2x+3y=-19

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Answer to a math question -7x+y=-19 -2x+3y=-19

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$\left\{\begin{array} { l } -7x+y=-19 \\ -2x+3y=-19\end{array} \right.$

$\left\{\begin{array} { l } y=-19+7x \\ -2x+3y=-19\end{array} \right.$

$-2x+3\left( -19+7x \right)=-19$

$x=2$

$y=-19+7 \times 2$

$y=-5$

$\left( x, y\right)=\left( 2, -5\right)$

$\left\{\begin{array} { l } -7 \times 2+\left( -5 \right)=-19 \\ -2 \times 2+3 \times \left( -5 \right)=-19\end{array} \right.$

$\left\{\begin{array} { l } -19=-19 \\ -19=-19\end{array} \right.$

$\left( x, y\right)=\left( 2, -5\right)$

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