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Solve the system of equations using matrices. Use the Gaussian elimination method with back-substitution. x + 3y = 0 x + 4y + z= 1

Solve the system of equations using matrices. Use the Gaussian elimination method with back-substitution. x + 3y = 0 x + 4y + z= 1 5x - y - z = 14 The solution set is (Simplify your answers.)

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