3×3 Systems Elimination by Addition 1) -5x-2y+20z=-28 2) 2x-5y+15z=-27 3) -2x-2y-5z= -12 Please write out all of the steps...

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3×3 Systems Elimination by Addition
1) -5x-2y+20z=-28
2) 2x-5y+15z=-27
3) -2x-2y-5z= -12
Please write out all of the steps so I'll be able tofigure out the formulas myself.

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Augmented matrix for given system of equations solution using GaussJordan elimination Your matrix X1 X2 X3 b 1 5 2 20 28 2 2 5 15 27 3 2 2 5 12 Make See Answer

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