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Solve for n
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Solve for a_n
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a_{n}n=2n+1
Variable n cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by n.
a_{n}n-2n=1
Subtract 2n from both sides.
\left(a_{n}-2\right)n=1
Combine all terms containing n.
\frac{\left(a_{n}-2\right)n}{a_{n}-2}=\frac{1}{a_{n}-2}
Divide both sides by a_{n}-2.
n=\frac{1}{a_{n}-2}
Dividing by a_{n}-2 undoes the multiplication by a_{n}-2.
n=\frac{1}{a_{n}-2}\text{, }n\neq 0
Variable n cannot be equal to 0.