Which Method Should Be Used to Solve the System? Explain $\begin{array} { r } - 8 x ^ { 2 } - y ^ { 2 } = 16 \\- 5 x ^ { 2 } + 7 y ^ { 2 } = 64\end{array}$

question 68

Essay

Which method should be used to solve the system? Explain your answer, including a description of the first step.
- $\begin{array} { r } - 8 x ^ { 2 } - y ^ { 2 } = 16 \\- 5 x ^ { 2 } + 7 y ^ { 2 } = 64\end{array}$

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