5x + 1y + 4z=-1
4x + 6y + 9z = - 68
9x + 1y + 4z = 27
Select one:
(7,-4, - 8)
(-4,-8, 7)
(-8, - 7, - 4)
(-7,4, - 8)
(-7, - 4, - 8)
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