In algebra, letters are used to stand for values that can change (variables ... An equation states that two expressions are equal in value, for example \(4b − 2 = 6\). An identity is a statement ...

The word NOT and its equivalent symbols are also prefix operators. The following are examples of prefix operators used with variables, constants, functions, and parenthetic expressions: When used to ...

In algebra, letters are used to stand for values that can change (variables ... An equation states that two expressions are equal in value, for example \(4b − 2 = 6\). An identity is a statement ...