agomez1982 agomez1982 07-06-2019 Mathematics contestada Suppose the first equation in a system of two linear equations is 12x + 7y = 25. The second equation being which of these will cause the system to have no solution? A. 12x + 7y = 20 B. 12x + 7y = 25 C. 12x + 9y = 20 D. 12x + 9y = 25