Question

-12-{-1-[+17-(-6=10)]-(+8)}

Answer 1

Olá.

$-12-\{-1-[+17-(-6+10)]-(+8)\}$
$-12-\{-1-[+17-(4)]-(+8)\}$
$-12-\{-1-[+17-4]-(+8)\}$
$-12-\{-1-[+13]-(+8)\}$
$-12-\{-1-13-(+8)\}$
$-12-\{-14-8\}$
$-12-\{-22\}$
$-12+22$
$\boxed{10}$

Qualquer dúvida, deixe nos comentários.
Bons estudos.

Answer 2

-12-{-1-[+17-(-6+10)-(+8)]}
-12-{-1-[+17-(+4)-8]}
-12-{-1-[+17-4-8]}
-12-{-1-[17-12]}
-12-{-1-5}
-12-{-6}
-12+6
-6