What does evaluate mean as an expression in math?

In mathematics, to "evaluate" an expression means to calculate its value by simplifying it according to the rules of arithmetic and algebra. This often involves performing operations such as addition, subtraction, multiplication, and division, as well as applying any necessary properties like the order of operations (PEMDAS/BODMAS). For example, evaluating the expression (2 + 3 \times 4) requires multiplying first, resulting in (2 + 12 = 14).