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Alexislg · Answer 1 · 2023-12-30T16:56:26+0000

Angles F and C are supplementary, then their addition is equal to 180 degrees, that is,

$m\angle F+m\angle C=180$

Substituting with data and solving for x:

$\begin{gathered} (157-17x)+108=180 \\ (157+108)-17x=180 \\ 265-17x=180 \\ 265-17x-265=180-265 \\ -17x=-85 \\ (-17x)/(-17)=(-85)/(-17) \\ x=5 \end{gathered}$

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