Question

Olá pessoal! preciso de ajuda, -20-{-4-[-8+(+12-6-2)+2+3]} como faço?

Answer 1

$-20-\{-4-[-8+(12-6-2)+2+3]\}= \\ -20-\{-4-[-8+(12-8)+2+3]\}= \\ -20-\{-4-[-8+(+4)+2+3]\{= \\ -20-\{-4-[-8+4+2+3]\}= \\ -20-\{-4-[-8+9]\}= \\ -20-\{-4-[+1]}\}= \\ -20-\{-4-1\}= \\ -20-\{-5\}= \\ -20+5=-15$