cswil6026 cswil6026 29-01-2024 Mathematics contestada Solve the following systems using substitution. Write your answer as an ordered pair (x, y). -5x + y = -2 -3x + 6y = -12 a) (x, y) = (2, -12) b) (x, y) = (-2, 12) c) (x, y) = (-2, -12) d) (x, y) = (2, 12)