Solve the system of equations using substitution.
A. x = 5, y = 9; x = -2, y = 16
or (5, 9), (-2, 16)
B. x = -5, y = 19; x = 2, y = 12
or (-5, 19), (2, 12)
C. x = 5, y = 19; x = -2, y = 16
or (5, 19), (-2, 16)
D. x = 2, y = 12 or (2, 12)
Answer: A
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