Solve the system. Express the solution in the form (x, y, z, w). 5x - 6z + w = 4-x + 5y + z - 5w = 8 2x - y + 6w = -21 y - 5z - w = -3
A. {(3, -3, 1, -5)}
B. {(-3, 3, 3, -6)}
C. {(2, -1, -1, 0)}
D. {(1, -3, -7, -5)}
Answer: A
Mathematics
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A. 
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B. 
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