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Mathematics 10 Online
OpenStudy (anonymous):

solve system of equations x-y=-3 3x-9y=9

OpenStudy (anonymous):

one easy option is to multiply the first equation by 9. thus you get 9x-9y = -27. Add the two equations up to get 12x = -18. x = -3/2. plug back in to see that y also equals -3/2. hope this helps!

OpenStudy (anonymous):

A.6,3 B.-6,-3 C.-3,0 D.-1.5,-1.5

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