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What are the coordinates of the point on the line $5x-9y=42$ such that the $x$ and $y$ coordinates are the additive inverses of each other? Express your answer as an ordered pair.

Guest Dec 6, 2017
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x+y=0

5x-9y=42

+

-5x-5y=0

-14y=42

y=-3

x=3

Guest Dec 7, 2017

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