Solve the System by the Substitution or Elimination Method $$\left( \begin{array} { r l l } 5 x ^ { 2 } - 6 y ^ { 2 } & = & - 1 \\5 x ^ { 2 } + 6 y ^ { 2 } & = & 11\end{array} \right)$$

Short Answer

Solve the system by the substitution or elimination method. $$\left( \begin{array} { r l l } 5 x ^ { 2 } - 6 y ^ { 2 } & = & - 1 \\5 x ^ { 2 } + 6 y ^ { 2 } & = & 11\end{array} \right)$$ Express your answer as an ordered pair. If there is more than one solution, separate your answers with a comma.