Question

Elimina los signos de agrupación y resuelve:

{4 + 5 - [-2 + 5 –(-2 + 1) + 3]}
​

Answer 1

{4 + 5 - [-2 + 5 –(-2 + 1) + 3]}

4 + 5 - [-2 + 5 –(-2 + 1) + 3]

4 + 5 + 2 - 5 (2 - 1) - 3

4 + 5 + 2 -5 + 2 - 1 - 3

9 - 3 + 1 - 3

6 - 2

4