College Algebra Quiz
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LINEAR MODELS & SYSTEMS
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When solving 5x+2y=135x + 2y = 13 and 3x+7y=163x + 7y = 16 by elimination, a student multiplies the first equation by 7 and the second by -2 to get 35x+14y=9135x + 14y = 91 and −6x−14y=−32-6x - 14y = -32. After adding these equations, what is the next step to find yy?
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