Respuesta :

[tex]\begin{gathered} \begin{bmatrix}x-y=3 \\ x+y=5\end{bmatrix} \\ x-y=3 \\ x-y+y=3+y \\ x=3+y \end{gathered}[/tex]

then

[tex]\begin{gathered} x+y=5 \\ 3+y+y=5 \\ 3+2y=5 \\ 3+2y-3=5-3 \\ 2y=2 \\ \frac{2y}{2}=\frac{2}{2} \\ y=1 \end{gathered}[/tex]

solve for x

[tex]\begin{gathered} x=3+y \\ x=3+1 \\ x=4 \end{gathered}[/tex]

answer: C. (4,1)

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