SV#5: Unit J Concept 3-4 - Solving 3-Variable Systems w/ G-J Elimination, Matrices, REF, Back-Subs., & Solve Non-square Systems

To view my video, please click here.
(This is DP#3)
Remember to pay close attention to how I'm solving the matrices and please double-check my work by doing it yourself first. This will prove beneficial because as you watch my video, you'll see that I'll tend to mess up quite a bit, but no worries because I did catch them!
Here is what the rref will look like once you've put in the numbers into the calculator: