Solving Systems with Row Operations

Each of the problems below is a link. If you click on the problem, it will take you to a YouTube video of a full, step-by-step solution for the problem. You may try these problems as practice and use the videos to check your answer, or you can just watch the videos to see more worked-out example problems.

Use Gaussian elimination to solve the system of equations: x + y + z = 4. x + 3y + 3z = 10. And 2x + y minus z = 3.
Use Gaussian elimination to solve the system of equations: x + y + z = 0. negative x + 2y + 5z = 3. And 3x minus y = 6.