 Quote by JameB
OOooohhh I see!! Now when I turn it into RREF, I'll get something like a1 = a+b-c etc.. correct?!
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Right.
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=> RREF
1 0 0 1 | a
0 1 2 0 | b
0 0 1 (-1/4) | d-2b/-4
0 0 0 0 | c-a+b+(d-2b)
Does that look like I'm on the right track?
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I think you made a mistake somewhere (or I did). I didn't get all 0s on the last row.