Can anyone help me with this problem? I've spent over an hour and got stuck (or screwed up). Thanks. Please show the steps... [1 2 -1 4 6 -2] [-2 1 4 -2 9 10] [3 4 -5 8 12 -12] [1 -3 1 8 9 17] [5 2 3 -6 -9 4]
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