Respuesta :

(30) The sum of exterior angles of a parallelogram is 360 degrees. Therefore,

[tex]\begin{gathered} (x-11)^{^{}}+(2x-42)+31+x+10=360 \\ 4x-12=360 \\ 4x=360+12 \\ 4x=372 \\ x=\frac{372}{4}=93 \end{gathered}[/tex]

The value of x is 93.

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