Question
$17-[17-\{17-(17-\overline{17-17})\}]$
✓
Answer
$\begin{aligned} & 17-[17-\{17-(17-\overline{17-17})\}] \\ & =17-[17-\{17-(17-0)\}] \\ & =17-[17-\{17-17\}] \\ & =17-[17-0] \\ & =17-17 \\ & =0\end{aligned}$
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