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OpenStudy (anonymous):
What is the solution to the system of equations? 2x – y = 7 y = 2x + 3
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OpenStudy (butterflydreamer):
substitute y=2x + 3 into 2x - y = 7 So in your first equation " 2x - y = 7 " , wherever you see "y", you will REPLACE this "y" with 2x + 3 since " y = 2x + 3" :)
OpenStudy (butterflydreamer):
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