Question

Evaluate :
$30+\left[\{-2\times (25-\overline{13-3}\left)\right\}\right]$

Answer 1

$30+\left[\{-2\times (25-\overline{13-3}\left)\right\}\right]$
It can be written as
$=30+\left[\{-2\times (25-10\left)\right\}\right]$
By further calculation
$=30+\left[\{-2\times 15\}\right]$
So we get
$=30+[-30]$
$=30-30$
$=0$