Respuesta :

TheAakash

Answer:

x = 66°

Step-by-step explanation:

Sum of the angles of a pentagon is 540°. So, set the expression equal to that and solve for x:

[tex]8x + 12 = 540[/tex]

[tex]x = \frac{540-12}{8} = 66[/tex]

Thus, x = 66°.