Question

{-5+8-[-7+4-(-2-8-4)]}

{-12-[+5-3-(-5-6+10]}

Answer 1

{-5+8-[-7+4-(-2-8-4)]}
(+2+8+4)
14
{-5+8-[-7+4-14]}
[+7-4+14]}
17
{-5+8-17}
-22+8
-14

{-12-[+5-3-(-5-6+10)]}
{-12-[+5-3-(+5+6-10)]}
{-12-[+5-3-(+11-10)]}
{-12-[+5-3-(+1)]}
{-12-[+5-3-1]}
{-12-[-5+3+1]}
{-12-[-1]}
{-12+1}
{-11}