In this lesson, you will learn how to solve a system of equations using the substitution method. A system of equations consists of more than one equation, and the solution is the point that makes both equations true. To find this solution, you can plug in one equation into the other and eliminate one variable. Then, it's easy to solve for the other variable and find the point where the two lines intersect. This method is helpful when one of the equations has a variable already solved for, making substitution easier.
Solving a system of equations by using substitution
I show how to solve math problems online during live instruction in class. This is my way of providing free tutoring for the students in my class and for students anywhere in the world. Every video is a short clip that shows exactly how to solve math problems step by step. The problems are done in real time and in front of a regular classroom. These videos are intended to help you learn how to solve math problems, review how to solve a math problems, study for a test, or finish your homework. I post all of my videos on YouTube, but if you are looking for other ways to interact with me and my videos you can follow me on the following pages through My Blog, Twitter, or Facebook.