cbrown1000 cbrown1000

10-03-2017
Mathematics

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If x and y satisfy both 9x+2y=14 and 7x+2y=2, then y=?

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hai0612 hai0612

10-03-2017

9x+2y=14 and 7x+2y=2
⇒ x= 6
y= -20

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