yes i knew, without any character can doing this?Put ' (apostrophe) in front of your + or -.
You are right, i change format cell to text and no problem or any errors, thank youActually, I can just type a + or - and it comes up as text anyway. Is this all you have in the cell? Are you trying to type "+/-"? That brings up the formula error. But it's OK if you format the cell as text.
please see this: Wrong alignment when edit a cell on not English languageHappy to help