#### Answer

Variables and constants where in variables are the values which may vary and the constants are fixed quantities which may be used to denote the coefficient of variables or the value that the variables combined together written as a sum or a difference equal .

#### Work Step by Step

Recall:
By the definition of the algebraic expression, it is a collection of letters (variables) and real numbers (constants) combined using the operations of addition, subtraction, multiplication, division, and exponentiation.The collection of letters called variables multiplied by their coefficients written as a sum or a difference would equal a constant value and the values that the variables may take to equal the right hand side of the equation would be called the solutions of the algebraic equation .