Resposta:
[tex]\textsf{Leia abaixo}[/tex]
Explicação passo a passo:
[tex]\mathsf{\left(\dfrac{180\textdegree - x}{4}\right) + \left(\dfrac{180\textdegree - x}{4}\right) + 3x = 180\textdegree}[/tex]
[tex]\mathsf{180\textdegree - x + 180\textdegree - x + 12x = 720\textdegree}[/tex]
[tex]\mathsf{360\textdegree + 10x = 720\textdegree}[/tex]
[tex]\mathsf{10x = 720\textdegree - 360\textdegree}[/tex]
[tex]\mathsf{10x = 360\textdegree}[/tex]
[tex]\boxed{\boxed{\mathsf{x = 36\textdegree}}}\leftarrow\textsf{letra C}[/tex]
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Resposta:
[tex]\textsf{Leia abaixo}[/tex]
Explicação passo a passo:
[tex]\mathsf{\left(\dfrac{180\textdegree - x}{4}\right) + \left(\dfrac{180\textdegree - x}{4}\right) + 3x = 180\textdegree}[/tex]
[tex]\mathsf{180\textdegree - x + 180\textdegree - x + 12x = 720\textdegree}[/tex]
[tex]\mathsf{360\textdegree + 10x = 720\textdegree}[/tex]
[tex]\mathsf{10x = 720\textdegree - 360\textdegree}[/tex]
[tex]\mathsf{10x = 360\textdegree}[/tex]
[tex]\boxed{\boxed{\mathsf{x = 36\textdegree}}}\leftarrow\textsf{letra C}[/tex]