6a+1-(6a-1) what is the answer

Question

i just want a clear answer.

Answer 1

6a + 1 - (6a - 1) = 6a + 1 - 6a - (-1) = 6a + 1 - 6a + 1 = (6a - 6a) + (1 + 1) = 0 + 2 = 2

Answer 2

6a+1-(6a-1) (Note: - in front of () is same as -1 times the expression inside the ()

=6a + 1 - 6a + 1

=2