Question

-4-{2+[-3-(-1+7)]+2}​

Answer 1

$-4-[2+[-3-(-1+7)]+2]$

$-4-[2+[-3-(+6)]+2]$

$-4-[2+[-3-6]+2]$

$-4-[2+[-9]+2]$

$-4-[2-9+2]$

$-4-[-7+2]$

$-4-[-5]$

$-4+5$

$+1$

Answer 2

Resposta:

-4- {2+[-3-(-1+7)]+2}​=

-4- {2+[-3-(+6)]+2}​=

-4- {2+[-3-6]+2}​=

-4- {2+[-9]+2}​=

-4-  {2-9+2}​=

-4 - {-5}​ =

-4 + 5 = + 1

Explicação passo-a-passo: