Question

- [3 + 4 + [4 + 7] + 4 - 9]

Answer 1

- [3 + 4 + [4 + 7] + 4 - 9]

- [3 + 4 + [11] + 4 - 9]

- [3 + 4 + 11 + 4 - 9]

- [3 + 4 + 11 - 5]

- [3 + 4 + 6]

- [3 + 10]

- [13]

- 13

Respuesta:

- 13

Answer 2

- (3+4+11+4-9)= -(13)= -13