## Introductory Algebra for College Students (7th Edition)

4z = 20;10 To check whether 10 is the solution of the given expression, Substitute 10 for z 4*10 = 20 (multiply 4*10) 40 $\ne$ 20 The statement is false because the values on both sides of the equation are not same, the number 10 is not the solution of the equation.