Respuesta :

[tex]\begin{gathered} 3x+y-(-2x+y)=-2-8 \\ 5x=-10 \\ x=-2 \end{gathered}[/tex]

Now we substitute the value of x into the first equation to get the value of y

[tex]\begin{gathered} -2\cdot-2+y=8 \\ 4+y=8 \\ y=8-4=4 \end{gathered}[/tex]

Finally the solution is (-2,4)

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