Answer:
23
Explanation:
Where a transversal crosses parallel lines, same-side interior angles are supplementary. The marked angles have a total of 180°.
(3x +28) +(2x +37) = 180
5x +65 = 180 . . . . collect terms
x +13 = 36 . . . . . . . divide by 5
x = 23 . . . . . . . . . . subtract 13