Respuesta :

[tex]\begin{gathered} \text{Let:} \\ y=x+8\text{ (1)} \\ x+y=2\text{ (2)} \\ \text{ Replace (1) into (2)} \\ x+x+8=2 \\ 2x=-6 \\ x=-\frac{6}{2} \\ x=-3 \\ \text{ Replace x into (1)} \\ y=-3+8=5 \end{gathered}[/tex]