Full answer: In Exercises 21 42, solve the system of linear equations and check any

Chapter 8, Problem 28

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Solving a System of Linear Equations   In Exercises 21–42, solve the system of linear equations and check any solution algebraically.

\(\left\{\begin{array}{lr} 2 x+4 y+z= & -4 \\ 2 x-4 y+6 z= & 13 \\ 4 x-2 y+z= & 6 \end{array}\right. \)

Text Transcription:

{2x+4y+z=-4 _2x-4y+6z=13 _4x-2y+z=6

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