Performing the row operations 22 and r₁ - 3r₂ → r₁ on the matrix 3 A = 23] which: 6 18 we get a new matrix B,

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Q: Jump to level 1 A = det A - 0 0 -6 0 Ex: 5 = -9 or co co -3 11 -4 12 -1 7 -10 9 5 -5 3

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