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Help pls

 Dec 4, 2018
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Since we have a line segment, this attains \(a+2x+3x=80\). Now, plugging in the value of \(a\), we get  \(45+5x=180, 5x=135\) . Solving for \(x\), we get \(\boxed{x=27^\circ}.\)

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 Dec 4, 2018

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