Question

1-(-3+6+1)-[4-(6-3+1)-2]

Answer 1

1-(-3+6+1)-[4-(6-3+1)-2]
1 - ( 4) - [ 4 - (4) - 2]
1 - 4 - [ 4 - 4 - 2]
-3 - [ -2]
- 3 + 2 = - 1