Im not too familiar with how to solve using matrices, I am pretty sure you have to make the diagonal equal to positive one and then the section below equal to zero but knowing that the answer is all fractions I am not exactly sure how to solve it that way. Although if you could show how to solve...
I currently have those same equations I just don't know how to solve the system, if you don't mind can you show your steps for that or just explain how you did, also thanks for the welcome and reply