Question

quanto é -1+(-2+5)+[-4+(6+5-8)]

Answer 1

$- 1 + ( - 2 + 5) + ( - 4 + (6 + 5 - 8)) \\ - 1 + 3 + ( - 4 + 3) \\ - 1 + 3 + ( - 1) \\ - 1 + 3 - 1 \\ 1$

Answer 2

-1+(-2+5)+[-4+(6+5-8)]

-1+3+[-4+3]

2+[-1]

2-1

1