Solve the given system by back substitution. (If your answer is dependent, use the parameters s and t as necessary.) x - y + z = 0 2y - z = 1 9z = -1 [x, y, z] =
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Step 1:** Solve for \(z\) in the third equation: \(9z = -1\) \(z = -\frac{1}{9}\) ** Show more…
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