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\[\begin{equation}x+y=z \\ x-y=z\\ xy=z \end{equation}\] Find \(x, y, z \). Enter your answer as \(3x+2y+z\).

 Jan 13, 2021
 #1
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x=0, y=0, z=0, therefore the answer is $0$

 Jan 13, 2021

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