Rewrite the system of equations in echelon form.

Question

4z = 4

- y - 2z = 0

6x + 7y + 4z = 8

Rewrite in echelon form:

Equation 1:

Equation 2:

Equation 3:

Answer 1

There are three forms:

EF (echelon): Lower triangular with any diagonal elements,

REF (reduced echelon): Lower triangular with 1's for diagonal elements,

RREF (row reduced echelon): Lower and upper with 1's for diagonal i.e. only the pivots remain.

Here is video I made: https://www.youtube.com/watch?v=4zPWM8OCPqA&feature=youtu.be