Using Elimination and the LCM to Solve a System

The video tutorial explains the elimination method for solving systems of equations. It emphasizes the importance of having the same coefficients for variables to use elimination effectively. The instructor discusses the alternative method of substitution but focuses on elimination, explaining how to find the least common multiple (LCM) to align coefficients. The tutorial demonstrates the process of elimination by adding equations and solving for variables, providing a step-by-step guide to reach the solution.

What is the first step to use elimination in solving equations?

Describe the process of substituting a variable when elimination is not possible.

Explain how to find the least common multiple (LCM) for the coefficients in the elimination method.

How do you solve for Y after eliminating X in a system of equations?

What should you do if the coefficients of the variables are not the same when using elimination?