Respuesta :

We have the following:

[tex]\begin{gathered} y=-x-6 \\ y=x-4​ \end{gathered}[/tex]

solving by substitution

[tex]\begin{gathered} -x-6=x-4 \\ x+x=-6+4 \\ 2x=-2 \\ x=-\frac{2}{2} \\ x=-1 \end{gathered}[/tex]

The answer is x is equal -1

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