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Exercises 17-30: The augmented matrix is in row-echelon form and represents a linear system. Solve the system by using backward substitution, if possible. Write the solution as either an ordered pair or an ordered triple.
20.
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Chapter 6 Solutions
College Algebra with Modeling & Visualization, Books a la Carte Edition plus MyLab Math with Pearson eText -- Access Card Package (6th Edition)
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