The total value of the exterior angles of a polygon is 360 degrees. To find x, we can add up all of the values of the exterior angles given, set it equal to 360, and solve for x in the equation.
59 + 77 + 66 + 62 + 12x = 360
264 + 12x = 360
12x = 96
x = 8
Hope this helps!! :)