How do you determine whether a number is a solution of an equation?

Answer 1

Substitute the value found back into the equation, evaluate the expressions and see if the resulting equation is true.

Answer 2

You replace the variable by the purported solution, and do all the calculations. If you end up with a true statement, for example 5 = 5, then it is a solution.

Answer 3

Substitute the number in place of the variable. Evaluate the expressions. If the resulting equation is true then the number is a solution.

Answer 4

if you plug the solution back into the equation both sides of the equation will be equal