Solve the system of equations.- 
x + 5y - 2z = -313x + 
y + z = 20 x - 3y + 4z = 31
A. (6, -3, 4)
B. (9, -3, 5)
C. (6, -6, 5)
D. (9, -6, 4)
Answer: A
Mathematics
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A. y ÷ x; 
B. x + y; 15
C. x ÷ y; 
D. xy; 56
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