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13-09-2017
Mathematics

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x +3y=18 3x +9y=12

Parallel, perpendicular or coinciding

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13-09-2017

6y6=−1716(Divide both sides by 6)y=−572Step: Substitute−572foryinx=−3y+183:x=−3y+183x=−3(−572)+183x=5372(Simplify both sides of the equation)Answer:x=537/2 and y=−57/2

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