Which Method Should Be Used to Solve the System? Explain $$\begin{aligned}x ^ { 2 } - 3 y ^ { 2 } & = 49 \\7 x ^ { 2 } - 7 y ^ { 2 } & = 9\end{aligned}$$

question 359

Essay

Which method should be used to solve the system? Explain your answer, including a description of the first step.
- $$\begin{aligned}x ^ { 2 } - 3 y ^ { 2 } & = 49 \\7 x ^ { 2 } - 7 y ^ { 2 } & = 9\end{aligned}$$

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