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Solve the system of equations using matrices. Use the Gaussian elimination method with back-substitution. 3a - b - 5c= 4 2a - b + 2c=

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Solve the system of equations using matrices. Use the Gaussian elimination method with back-substitution. 3a - b - 5c= 4 2a - b + 2c= -9 a + 2b + 3c = -1 Use the Gaussian elimination method to obtain the matrix in row-echelon form. Choose the correct answer below. 1 0 -16 13 O B. 0 1 - 16 3 0 0 0 0 O C. O D. 0 1 - 16 0 1 - 16 35 0 0 - 2 0 0 The solution set is

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