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OpenStudy (nthenic_oftime):
HELP PLEASE!! Solve the system of equations using matrices. Use Gauss-Jordan elimination. 3x - y - 7z = 7 6x + 4y - 3z = 67 -6x - 3y + z = -62 A. {( 7, 1, 7)} B. {( 14, 7, -7)} C. {( -7, 7, 14)} D. {( 7, 7, 1)}
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Directrix (directrix):
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