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OpenStudy (anonymous):
Solve the system using elimination. 3x + 3y = –9 3x – 3y = 21
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OpenStudy (anonymous):
divide your first equation and second equation by 3 first to make it simple then add the equations. x + y = -3 x - y = 7 -------- 2x = 4 x = 2 now solve for y by substitution
OpenStudy (anonymous):
Just add two equations: 6x = 12 x = 2 and now solve for y...
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