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Y=2x X+Y=-9 What's the answer ?
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3 votes
Y=2x
X+Y=-9
What's the answer ?

User Dave Merwin
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1 Answer

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y=2x\\ x+y=-9\\\\ x+2x=-9\\ 3x=-9\\ x=-3\\\\ y=2\cdot(-3)\\ y=-6\\\\ \boxed{(x,y)=(-3,-6)}
User Yuwen Yan
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