hello can someone please demonstrate how matrix is evaluated by expressing it in echelon form and use row reduction to solve it. it would be a great help.
k1+ L2+ Z = 20
3K -L+2Z = 22
2K+L-4Z=7
Actually, it is the other way around- row reduce in order to get the echelon form.
The "augmented matrix" for this system is .
Now use row operations to put this into echelon form. For example, a first step would be to subtract three times the first row from the second row and subtract two times the first row from the third row:
That take care of the first row. Now subtract 3/7 times the second row from the third row.
You might want to use this to find out where you are going wrong:
Linear Algebra Toolkit