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Mathematics 13 Online
OpenStudy (anonymous):

Which ordered pair in the form (a, b) is a solution of this equation? 3a – 4b = 21 (Points : 1) (–2, –3) (0, 7) (7, 0) (–3, –2)

OpenStudy (alexandervonhumboldt2):

substitute ponts into the equation and check

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