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{a+a2+a3+a4+⋯=2a2+a3+a4+a5+⋯=1 { \begin{cases} a+a^2+a^3+ a^4 + \cdots= 2 \\ a^2+a^3+a^4+ a^5 + \cdots=1 \\ \end{cases}} {a+a2+a3+a4+⋯=2a2+a3+a4+a5+⋯=1
Given the above, find aaa.
Inspiration.
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