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In algebra, we begin to see variables, or letters that are used to represent numbers.
An example of a mathematical expression with a variable is 2x + 3. All variables must have a coefficient, a number that is multiplied by the variable.
Numerical Expression Definition:-
Anumerical expression is a mathematical sentence involving only numbers and one or more operation symbols. Examples of operation symbols are the ones for addition, subtraction , multiplication , and division.
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