Respuesta :

if a and b are supplementary. Therefore we get that

[tex]\begin{gathered} 5x+25+x+17=180 \\ 6x+42=180 \\ 6x=138 \\ x=\frac{138}{6}=23 \end{gathered}[/tex]

so the measure for the angle a is

[tex]m\angle a=5\cdot23+25=115+25=140[/tex]

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