Given the system:
-3x_(1)+6x_(2)-x_(3)=54 -3x_(2)+5x_(3)=-30 -3x_(1)-3x_(2)+14x_(3)=0
(7pts) Q1. Determine the RREF of the augmented matrix for the system. (you must label all of your steps for full credit. Write neatly so you have enough space!)