Question: Solve each linear system below by Gaussian elimination and back substitution. Show only the major steps of your calculations, i.e. , the results of your

Solve each linear system below by Gaussian elimination and back substitution. Show only the major steps of your calculations, i.e., the results of your elimination steps and back substitution steps. If the system does not have a solution, explain why in a sentence or two.

2 2 1 X1 a. 212 X2 = 0 1 2 X3 0

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