missed class: reduce matrix to red. echelon form

[BuzzieCat]

well im stuck on this matrices, the question says reduce the matrix to its reduced echelon form... unfortunately I missed last lecture and don't know this material.. if anyone can solve and showing each step it would help a ton, thanks.


reduce the matrix to its reduced echelon form:

[ 1 4 -2 |7]
[ 2 5 2 |2 ]
[ 0 3 2 |5 ]

[stapel_eliz]

I missed last lecture and don't know this material.

To learn what "echelon form" is, try here. To learn how to do the row operations on the matrix (in order to get that form), try here.