For addition we normally use the plus sign ("+") and for subtraction we use the minus sign ("+") and subtraction ("–"). But have you ever thought that from where do these symbols came from.

D is Drive, R is Reverse, P is Park, and N is Neutral. However, many automatic shifters also have a mysterious pair of plus and minus signs, usually near the D or N settings and perhaps ...

Statistically, the most common symbol in mathematics is the equal sign, which appears in 94% of mathematical expressions.

which lets professors use plus and minus signs to indicate that a student's score is in the upper or lower portion of a letter grade: A-minuses, B-pluses, C-minuses and so on rather than straight ...