BD is the bisector of LABC.
m_ABD = 2x + 7
m2 DBC = 3x – 17
Solve for x and find m2 ABD.

Answer:
x= 24, <ABD = 55°
Step-by-step explanation:
The way I go to x=24 is in the picture, but to find <ABD is a piece of cake, just take its value (2x+7) and replace the x with 24 and then you will get 55°
Glad to help :)