Answer
$\dfrac{x}{x-1}$
Work Step by Step
Here, $a=1$ and common ratio $r =\dfrac{1}{x}$
Formula to calculate the sum of a geometric series is:
$S=\dfrac{a}{1-r}$;
Thus, $S=\dfrac{1}{1-\dfrac{1}{x}}$
or, $S=\dfrac{x}{x-1}$
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