Choose the systems that could be BEST solved by using the elimination method. Click once to select an answer. Click again to change your answer. a) 12x + 3y = 18
5x + 3y = 4 b) y= 2x + 7 y = x − 9 c) 3x + 2y = 9 x − y = 5 d) x = − 3y x = 4y + 3