Question

Resolva
-4-(+2+(-3-(-1+7))+2)

Answer 1

Resolvendo:

$\mathsf{-4-\left(+2+\left(-3-\left(-1+7\right)\right)+2\right)}\\\\\mathsf{-4-\left(2+\left(-3-6\right)+2\right)}\\\\\mathsf{-4-\left(2+\left(-9\right)+2\right)}\\\\\mathsf{-4-\left(2-9+2\right)}\\\\\mathsf{-4-\left(2-7\right)}\\\\\mathsf{-4-\left(-5\right)}\\\\\mathsf{-4+5}\\\\\boxed{\mathsf{1}}\: \: \checkmark$

Answer 2

-4 - (+2 + (-3 - (-1 +7)) + 2 )=  ----------- resolve os parêntesis de dentro pra fora 
- 4 - (+ 2 + (-3 - 6) + 2 ) =
-4 - (+2 -9 +2)=
-4 - (-5) =
- 4 + 5 = 1  

ou


-4 - (+2 + (-3 - (-1 +7)) + 2 ) =  -------------- vai retirando dos parêntesis e resolve no
- 4 - (+2 + (-3 + 1 - 7) + 2 ) =                      final.
-4 - (+2 - 3 + 1 - 7 + 2) =
-4 -2 + 3 -1 + 7 - 2 =
-9 + 10 =
1