Solve the given system by back substitution. (If your answer is dependent, use the parameters s...

   

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Solve the given system by back substitution. (If your answer is dependent, use the parameters s and t as necessary.) y + z = x - 0 2y - z= 1 [x, y, z] = 9z = -1 Need Help? Read It Talk to a Tutor -1 points PooleLinAlg4 2.1.024. Solve the given system by back substitution. (If your answer is dependent, use the parameters s and t as necessary.) x-4y + z = 8 y-3z=-1 [x, y, z] = Solve the given system by back substitution. (If your answer is dependent, use the parameters s and t as necessary.) y + z = x - 0 2y - z= 1 [x, y, z] = 9z = -1 Need Help? Read It Talk to a Tutor -1 points PooleLinAlg4 2.1.024. Solve the given system by back substitution. (If your answer is dependent, use the parameters s and t as necessary.) x-4y + z = 8 y-3z=-1 [x, y, z] =