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Solve the system of equations by finding the reduced row-echelon form of the augmented matrix for the system of equations.
2x+y+4z=16
5x-2y+2z=-1
x+2y-3z=-9
a.
[-1,2,22]
c.
[-1,2,4]
b.
[-10,22,42]
d.
[-10,2,22]


Please select the best answer from the choices provided

A
B
C
D