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OpenStudy (anonymous):
Solve the system using elimination. 3x + 3y = –9 3x – 3y = 21 A. (3, –6) B. (–5, 2) C. (3, 3) D. (2, –5)
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OpenStudy (anonymous):
Subtract the two equations and tell what you got?
OpenStudy (anonymous):
you should just add the two equations 6x = 12 so x = 2
OpenStudy (anonymous):
3x + 3y = -9 3x - 3y = 21 Subtract: 6y = -30 Get y from here..
OpenStudy (anonymous):
The answer is D. Plug in 2 for X and -5 for y in each equation.
OpenStudy (anonymous):
thank you guys! :)
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