Hey there!!
These angles are the supplement angles.
Add them, we get 180 degrees
Hence,
... 3x + 15 + 2x + 5 = 180
... 5x + 20 = 180
... 5x = 160
... x = 160 / 5
... x = 32
3 ( 32 ) + 15 and 2 ( 32 ) + 5 are the angles
111 and 69 are the angles
Hope my answer helps!!
