Solve the system.
A. x = 4, y = -1, z = 5, w = -4
B. x = -1, y = 3, z = 6, w = 1
C. x = -4, y = -5, z = 10, w = 4
D. x = 4, y = -2, z = 0, w = 4
Answer: A
Mathematics
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