4x - 6y = 10 5x + 7y = - 2 If you were going to solve this system by elimination by adding the two equations together, what would be a correct first step? A) Multiply the first equation by 7 and the bottom by 6. B) Multiply the first equation by 5 and the bottom by 4. C) Multiply the first equation by - 7 and the bottom by 6. D) Multiply the first equation by 7 and the bottom by - 6.
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