Answer:
x = 75°
Explanation:
sum of interior angles of any polygon can be found using this formula:
(n-2)·180°, where 'n' is the number of sides
the shape in this problem has 6-sides, a hexagon
(6-2)·180 = 720°
x + 281 + 24 + 157 + 84 + 99 = 720
x + 645 = 720
x = 720-645
x = 75°