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- Dictionarysubtraction/səbˈtrakʃn/
noun
- 1. the process or skill of taking one number or amount away from another: "subtraction of this figure from the total"
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noun
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Process of subtracting a number from another ; mathematical operation that represents the operation of removing objects from a collection
Subtraction is one of the four arithmetic operations along with addition, multiplication and division. Subtraction is an operation that represents removal of objects from a collection. For example, in the adjacent picture, there are 5 − 2 peaches—meaning 5 peaches with 2 taken away, resulting in a total of 3 peaches. Therefore, the difference of 5 and 2 is 3; that is, 5 − 2 = 3. While primarily as... Wikipedia