Question: In Problems 1122, use elementary row operations to transform each augmented coefficient matrix to echelon form. Then solve the system by back substitution. 2x 1

In Problems 11–22, use elementary row operations to transform each augmented coefficient matrix to echelon form. Then solve the system by back substitution.

2x₁ + 4x₂ - x₃ - 2x₄ + 2x₅ = 6

x₁ + 3x₂ + 2x₃ - 7x₄ + 3x₅ = 9

5x₁ + 8x₂ - 7x₃ + 6x₄ + x₅ = 4

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