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Solve for a_n, n
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a_{n}=-8\times 2^{1-1}
Consider the first equation. Insert the known values of variables into the equation.
a_{n}=-8\times 2^{0}
Subtract 1 from 1 to get 0.
a_{n}=-8
Calculate 2 to the power of 0 and get 1.
a_{n}=-8 n=1
The system is now solved.