[tex] \left \{ {{x+4y=11\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ } \atop {x-6y=11\ \ | multiply\ by\ -1}} \right. \\\\ \left \{ {{x+4y=11} \atop {-x+6y=-11}} \right. \\+----\\elimination\ method\\\\
10y=0\\
y=0\\
x=11-4y=11\\\\
Solution:\\ \left \{ {{y=0} \atop {x=11}} \right. [/tex]
