\(x\), \(y\), and \(x\)-ponents

Algebra Level 1

If \(\frac{4^{x}}{2^{x + y}}\) \(= 8\) and \(\frac{9^{x + y}}{3^{5y}}\) \(= 243\), where \(x\) and \(y\) are real numbers, then what is the sum \(x + y\)?

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