How do you solve using gaussian elimination or gauss-jordan elimination, #4x-3y= -1#, #3x+4y= -3#?
In augmented matrix form:
Starting with row 1 as the "pivot row" (and column 1 as the "pivot column")
Reduce the pivot row (by dividing by the pivot entry value) so the pivot entry
Reduce the non-pivot rows so their pivot column entries are
(by subtracting the pivot row times the non-pivot row, pivot column entry from the non-pivot row)
Advance the pivot row (so it is now row 2)
and repeat the above process: