SOLUTION: Solve the system using an augmented matrix in the reduced row echelon form. Be sure to show all elementary row operations. x+y+z=-1 x-y+5z=1 2x+y+z=-4 I submitted this ea

Question 1134302: Solve the system using an augmented matrix in the reduced row echelon form. Be sure to
show all elementary row operations.
x+y+z=-1
x-y+5z=1
2x+y+z=-4
I submitted this earlier but accidentally put z instead of the 2
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!

Make zeros in column except the entry at row , column (pivot entry).
Subtract row from row:

Subtract row multiplied by from row

Make zeros in column except the entry at row, column (pivot entry).
Divide row by :

Subtract row from row :

Add row to row :

Make zeros in column except the entry at row, column(pivot entry).
Add row to row :

Divide row by :

Add row multiplied by to row

Answer: the reduced row echelon form is
A[ref]=

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