Solve for the value of x₁, x₂ and x3 of the following equations using LU decomposition method. Show your solution. (Use fraction for your solution. Round-off final answers to 2 decimal places) x₁ + x₂ + x3 = 3 2x₂ + 3x₂ + 4x3 = 9 X₁ + 7x₂ + x3 = 9

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