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2x-y=5 x-y=4

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Answer to a math question 2x-y=5 x-y=4

Expert avatar
Jon
4.6
53 Answers
$\left\{\begin{array} { l } 2x-y=5 \\ x-y=4\end{array} \right.$
$\left\{\begin{array} { l } 2x-y=5 \\ -x+y=-4\end{array} \right.$
$x=1$
$1-y=4$
$y=-3$
$\left( x, y\right)=\left( 1, -3\right)$
$\left\{\begin{array} { l } 2 \times 1-\left( -3 \right)=5 \\ 1-\left( -3 \right)=4\end{array} \right.$
$\left\{\begin{array} { l } 5=5 \\ 4=4\end{array} \right.$
$\left( x, y\right)=\left( 1, -3\right)$

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