Question

-1911-(1234-1911)

Answer 1

-1911-(1234-1911)= -1234

Answer 2

-1911-(1234-1911)

= -1911-1234+1911

= [(-1911)+1911]-1234

= 0-1234

=-1234

Answer 3

-1911-(1234-1911)

=-1911-1234+1911

=(-1911+1911)-1234

=0-1234

=-1234

Answer 4

-1911- (1234 - 1911)

= -1911 - 1234 + 1911

= (-1911 + 1911) - 1234

= 0                       - 1234 = -1234.