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Hello everyone, every row operation I make now is taking out the 0's i just made, any ideas on what I can do from here?

Here is my work:

http://img201.imageshack.us/img201/5573/lastscan2ah.jpg [Broken]

Also I was confused on how this works, my professor did an example:

3x+2y+z = 8;

x = a

y = b

z = 8 - 3a - 2b

I get this part but then he does the following:

http://img140.imageshack.us/img140/1337/eeeeeee1ut.jpg [Broken]

Where is he getting those values? The first one looks like he let a = 0 and b = 0, then ur left with just 8, but i'm not sure.

Thanks.

Here is my work:

http://img201.imageshack.us/img201/5573/lastscan2ah.jpg [Broken]

Also I was confused on how this works, my professor did an example:

3x+2y+z = 8;

x = a

y = b

z = 8 - 3a - 2b

I get this part but then he does the following:

http://img140.imageshack.us/img140/1337/eeeeeee1ut.jpg [Broken]

Where is he getting those values? The first one looks like he let a = 0 and b = 0, then ur left with just 8, but i'm not sure.

Thanks.

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