Given the following set of linear equations: x 1 + 2 x 2 - x 3 = 3 3 x 1 - x 2 + 2 x 3 = 9 2 x 1 + x 3 = 7 What is the value of x 3 ?

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Given the following set of linear equations:

x₁ + 2x₂ - x₃ = 3

3x₁ - x₂ + 2x₃ = 9

2x₁ + x₃ = 7

What is the value of x₃?

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