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OpenStudy (anonymous):
Solve the system using elimnation. 3x+3y=-9 3x-3y=21 A.(3,-6) B.(-5,2) C.(3,3) D.(2,-5)
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OpenStudy (ghazi):
add both the equations you'll have 6x= 12
OpenStudy (anonymous):
3x+3y=-9 3x-3y=21 6x=12 x=2 y=-5
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