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Plus and minus signs - Wikipedia

The plussign (+) and the minus sign (−) are mathematical symbols used to denote positive and negative functions, respectively. In addition, the symbol + represents the operation of addition, which results in a sum, wh...

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Definition of plus sign | PCMag

What does plus sign actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.

en.wikipedia.org

Addition - Wikipedia

Addition, usually denoted with the plussign +, is one of the four basic operations of arithmetic, the other three being subtraction, multiplication, and division.