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OpenStudy (anonymous):
] For the following system, if you isolated x in the first equation to use the Substitution Method, what expression would you substitute into the second equation? −x + 2y = 9 ...(1) 4x + 5y = 9 ...(2) A)−9 + 2y B)−9 − 2y C)9 − 2y D)9 + 2y
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OpenStudy (espex):
When you isolated x, what did you end up with?
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