Solve using Gaussian Elimination. Show your work!

1.

3x+5y-z=-7

x+y+z= -1

2x+11z=7

2.

x+2y-3z=5

-2-3y+4z=-6

3x+6y-9z=15
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1 Answer

Matrix(3, 3, {(1, 1) = 2.51, (1, 2) = 1.48, (1, 3) = 4.53, (2, 1) = 1.48, (2, 2) = .93, (2, 3) = -1.30, (3, 1) = 2.68, (3, 2) = 3.04, (3, 3) = -1.48})
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