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OpenStudy (anonymous):
4X-3Y=-2 7X+9Y=-1
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OpenStudy (anonymous):
4X-3Y=-2...................A multiplying A by 3 12X-9Y=-6..................B 7X+9Y=-1.....................C addind B & C 19X=-7 X=-7/19 putting value of X in C 7(-7/19)+9Y=-1 -49/19+1=-9Y -30/19=-9Y Y=30/19*9 Y=10/57
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