Respuesta :

A well-known formula gives us that [tex] y = \frac{6x-3x}{2} = \frac{3x}{2}[/tex].  Additionally, the sum of the angles in a circle is 360, so [tex]6x+3x=9x=360[/tex], so [tex]x=40^\circ[/tex].  Therefore, [tex]y = 60^\circ[/tex].