Solve the system in terms of the arbitrary variable listed.x;5x - y + z = 87x + y + z = 6
A. {(x, -x + 1, 6x + 7)}
B. {(x, -x + 1, 6x - 7)}
C. {(x, -x - 1, -6x + 7)}
D. {(x, -x + 1, -6x + 7)}
Answer: C
Mathematics
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