steps:
angle 1 = 180- 125
angle 1 = 55° (angles on straight line = 180°)
angle 2 = 40° (vertically opposite angles are equal)
angle 3 = 180 - 55 - 40
angle 3 = 85° (angles in triangle = 180°)
angle 4 = 85 - 44
angle 4 = 41°
x = 41°
please feel free to redo all the calculations in case i did calculated it wrong