# I found f(x), now what?

Algebra Level 3

Find the value of x, given that

$f\left( x \right) =1+\frac { 1 }{ x } +\frac { 1 }{ { x }^{ 2 } } +\cdots$

$f\left(\frac { x }{ x-1 } \right)=10$

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