Question: D Question 61 Solve the system of equations using matrices. Use Gaussian elimination with back-substitution. X - y+ 4z = 20 5x + z =

D Question 61 Solve the system of equations using matrices. Use Gaussian elimination with back-substitution. X - y+ 4z = 20 5x + z = 4 x + 3y+z = -8 O {(4, 0, -4)} O {(0, 4, -4)} O {(0, -4, 4) } O {(4, - 4, 0)}

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