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March 27, 2017

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1 -1 -1 1 2
0 1 -3 -7 0
3 0 -2 2 10
6 2 4 5 9


-3Row1 + Row3

-6Row1 + Row4

How do I work this using a calculator I get so confused and I don't know where to go in order to input info.

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