Question
$30+[\{-2 \times(25-\overline{13-3})\}]$
✓
Answer
$\begin{aligned} & 30+[\{-2 \times(25-\overline{13-3})\}] \\ & =30+[\{-2 \times(25-10)\}] \\ & =30+[\{-2 \times 15\}] \\ & =30+[-30] \\ & =30-30 \\ & =0\end{aligned}$
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