Respuesta :

Answer:

  • x=16

Step-by-step explanation:

Since RQTS is a parallelogram

[tex]\angle Q +\angle T=180^{o}[/tex]

[tex]3x+5+9x-17=180^o[/tex]

[tex]12x-12=180^o[/tex]

[tex]12x-12+12=180+12[/tex]

[tex]12x=192[/tex]

[tex]\cfrac{12x}{12}=\cfrac{192}{12}[/tex]

[tex]x=16[/tex]

Hope it helps!