Solve using elimination.
A. x = 
, y = 
; x = - 
, y = - 
or 
, 
B. x = 
, y= - 
; x = 
, y = 
or 
, 
C. x = 
, y = 
; x = 
, y = - 
or 
, 
D. x = 
, y = - 
; x = - 
, y = 
or 
, 
Answer: A
Mathematics
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