Use Gaussian elimination with backward substitution and two-digit rounding arithmetic to solve the following linear systems. Do not reorder the equations. (The exact solution to each system is x₁ = -1, x₂ = 1, x3 = 3.) b. 4x₁2x₂ Xx3 = -5, x₁ + x₂x3 = -1, x₁ + 4x₂ + 2x3 = 9. -

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A: Prove that  there is no solution for positive integers.Let if for for

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