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Mathematics 18 Online
OpenStudy (anonymous):

Which of the following systems of equations has infinitely many solutions? A. 3x + 3y = 11; 6y = 6x − 22 B. 8x − 7 = 6y; 12y − 14 = 4x C. 7y = x + 3; -3x + 21y = 9 D. 5x − 7y = 4; 14y = 10x + 8

OpenStudy (anonymous):

C: it is directly proportional in every way

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