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Replace Rą by (- 7)R1 + R2. [ 14 -61-4 76 77 (-7)R1 + R2 -6 5 6 7 0000 (-7)R, +R2 = OOOO 0000
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Answer #1

Consider ra 7 1-6 give augmented matrise a -61-4] 6 7 7 5.617 Replace Rz by (-7) Rq+ R2 we get (-7) R2 + R2 = 10 -22 49| 35

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