Question

I need some help on this one, but I need the steps.
I have a 3x4 matrix and it needs to be reduced to echelon. Matrix is below, thanks
0 1 2 2 3 7 0 0
1 2 2 3 7 0 0 0
2 2 3 7 0 0 0 1
2 3 7 0 0 0 1 2

Answer 1

first u need to post the bracket that most linear algebra does
[0 1 2 2 3 7 0 0]
[1 2 2 3 7 0 0 0]
[2 2 3 7 0 0 0 1]
[2 3 7 0 0 0 1 2]

Answer 2

switch the bottom value and put it in the top
[1 2 2 3 7 0 0 0]
[0 1 2 2 3 7 0 0]
[2 2 3 7 0 0 0 1]
[2 3 7 0 0 0 1 2]

Answer 3

after that u need to multiply and subtract the value in the r1-r2

Answer 4

in the u will get
[x 0 0 0]
[0 x 0 0]
[0 0 x 0]
[ 0 0 0 x]
in echelon form

Answer 5

Thank you