Question

Como resuelvo el siguiente problema,
-11+7-2{-4+1[-2(-3+4)-2+47+8]-4}=

Answer 1

-11+7-2 {-4+1[-2 (-1)-2+47+8]-4}
-11+7-2{-4+1[2-2+47+8]-4}
-11+7-2{-4+1[55]-4}
-11+7-2{-4+55-4}
2{47}
=94

Answer 2

= -11+7-2{-4+1[-2-2+47+8]-4}
= -11+7-2(-4+51-4)
= -11+7-2(43)
= -11+7-86
=-90