1 = 0

Proof:
1 = 1 + (-1 + 1) + (-1 + 1) + (-1 + 1) + ....
  = (1 + -1) + (1 + -1) + (1 + -1) + (1 + -1) + ......
  = 0

kekekeke

>>48
If it is infinite, you CANNOT put the 1 at the end; that is just how infinite sums work.
SPOILER: You can operate on an infinite series.
There is a difference between 'putting it at the end' (impossible since there is no end), and simply adding an expression to the sequence as a whole. The addition doesn't try to append to the sequence, it operates on it.