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OpenStudy (anonymous):
Choose a method to solve the system with. Explain why you chose that method. 2x+7y=-20 y=3x+7
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OpenStudy (anonymous):
I'd substitute the 2nd equation into the first and solve for x
OpenStudy (anonymous):
I chose this method because the 2nd equation was already in a y= something form. 2x + 7(3x+7) = -20
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