Solve the System by the Substitution or Elimination Method $$\left( \begin{array} { r l } 4 x ^ { 2 } + 3 y ^ { 2 } & = 24 \\y ^ { 2 } - 4 x ^ { 2 } & = 12\end{array} \right)$$

Short Answer

Solve the system by the substitution or elimination method. $$\left( \begin{array} { r l } 4 x ^ { 2 } + 3 y ^ { 2 } & = 24 \\y ^ { 2 } - 4 x ^ { 2 } & = 12\end{array} \right)$$ Express your answer as an ordered pair. If there is more than one solution, separate your answers with a comma.