Linear Algebra. All systems will be solved by performing elementary row operations on an augmented matrix until it is transformed into REF. Consider the following system: X1-X2-X3=1 , X1 X3=2 , X2 2X3=1
a) Solve: X1 = -1, X2 = 0, X3 = -1
b) Solve: X1 = 1, X2 = 0, X3 = -1
c) Solve: X1 = -1, X2 = 1, X3 = 0
d) Solve: X1 = 0, X2 = 1, X3 = 1