Solving a system using elementary row operations

If someone could please help me with this. its a question about Solving a system using elementary row operations which is honestly one of the easiest and msot simple things to do but for the life of me I cannt understand what I am doing wrong (Headbang)

I solved the system so i know what hte answers are but when doing elementary row operations method i keep getting wrong answers

the Matrix is as per below

3 -2 1 2

1 -1 -1 -4

4 1 -2 0

please if someone could could..just really frustrated at this point :(

Re: Solving a system using elementary row operations

Show us the first step that you tried and we'll see if you're on the right track.

Re: Solving a system using elementary row operations

here is how i started the soln

Divide row1 by 3

1 -2/3 1/3 2/3

1 -1 -1 -4

4 1 -2 0

Add (-1 * row1) to row2

1 -2/3 1/3 2/3

0 -1/3 -4/3 -14/3

4 1 -2 0

Add (-4 * row1) to row3

1 -2/3 1/3 2/3

0 -1/3 -4/3 -14/3

0 11/3 -10/3 -8/3

right now im about to divide row 2 by -1/3 and will get back to you soon

Re: Solving a system using elementary row operations

Re: Solving a system using elementary row operations

Hello, flametag2!

I would avoid fractions when possible.

My first step may surprise you.

. . .

Therefore: .