Given the following question:
[tex]\begin{gathered} x-y=11 \\ 2x+y=19 \end{gathered}[/tex][tex]\begin{gathered} x-y=11 \\ 2x+y=19 \\ x+2x=3x \\ -y+y=0 \\ 11+19=30 \\ 3x=30 \\ \frac{3x}{3}=x \\ \frac{30}{3}=10 \\ x=10 \\ \\ x-y=11 \\ x=10 \\ 10-y=11 \\ -y+10=11 \\ 10-10=0 \\ 11-10=1 \\ -y=1 \\ y=-1 \\ \end{gathered}[/tex]x = 10
y = -1
