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Which of the following ordered pairs represents the solution to the system given below?

x − 3y = 12
2x + 6y = 60

(0, −4)
(12, 0)
(3, 21)
(21, 3)

Respuesta :

The answer is (21, 3) because if you plug in 21 for x and 3 for y in either or both of the equations, the equations will be true.
I think the awnser is (3,21) I hope I helped and I hope you have a great day!