Subtracting two rational expressions by getting common denominators

The video tutorial covers solving equations by eliminating fractions using the Least Common Denominator (LCD). The instructor explains the process of multiplying each term by the LCD to simplify the equation, followed by solving the equation step-by-step. Errors in the problem setup are addressed, and the solution is verified to ensure it does not make the denominator zero.

Why is it important to check that X + 3 does not make the denominator zero?

What should you do after finding the solution for X?