Question

"qual o valor da expressao -20-{-10-[-8+(5-12)]-20}=" nos resultados

Answer 1

-20-{-10-[-8+(5-12)]-20}
-20-{-10-[-8+(-7)]-20}
-20-{-10-[-15]-20}
-20-{-15}
-20+15= -5

Answer 2

  -20-{-10-[-8+(5-12)]-20}
  -20-{-10-[-8-7]-20}
  -20-{-10+15-20}
   -20-{- 15}
    - 20 + 15
          - 5