Answer:
x = 80°
Explanation:
The sum of the interior angles of a hexagon is 720 degrees. So,
x + (x - 5) + (x - 5) + (2x - 5) + (2x - 5) + (2x + 20) = 720
Eliminating parenthesis
x + x - 5 + x - 5 + 2x - 5 + 2x - 5 + 2x + 20 = 720
Adding and subtracting
9x + 0 = 720
Isolating x
x = 720/9
x = 80