Question: Determine whether the system of equations has a unique solution. If it does then solve for z. If there is no answer, write none

Determine whether the system of equations has a unique solution. If it

Determine whether the system of equations has a unique solution. If it does then solve for z. If there is no answer, write "none" in the box. 2x+3y-5x=-73 -6x+y+8z = 56 -9x-4y-2z = 13 x =

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