# $$x$$, $$y$$, 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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