Consider the following linear system x + 2y - 3z =...

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Consider the following linear system.
x + 2y - 3z = a
2x + 3y + 3z = b
5x + 9y - 6z = c
This system is consistent if a, b and c satisfy the equation

A. 7a - b - c = 0

B. 3a + b - c = 0

C. 3a - b + c = 0

D. 7a - b + c = 0

Answer: Option B

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