How Do You Solve a System of Equations Using the Elimination by Subtraction Method?

Check out this video and see how the instructor explains how to solve a system of equations by using the elimination method. There are several steps in solving this equation: multiplying the equation by negative one, subtracting a variable, solving for a variable, plugging in a value to then find the value of the other variable. Sounds like a bit of work. So check out this video.