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Write the system of equations as a matrix equation. Then solve the system, if possible, by using a matrix equation. If not possible, classify the system.{x + 2y + z = -17{3x + 7y + 2z = -56{x - y + 2z = 0

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1. Write the system of equations as a matrix equation. Then solve the system, if possible, by using a matrix equation. If not possible, classify the system.

{x + 2y + z = -17
{3x + 7y + 2z = -56
{x - y + 2z = 0





 
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