please I need help, if you could show work too that would be amazing

Answer:
x = 3
Step-by-step explanation:
Hi there,
We know that the value of ∠ABD and ∠DBC are the same because BD bisects it. Therefore, we can set both of the angle values equal to each other to find the value of x.
9x = (8x + 3)
x = 3
Hope this answer helps. Feel free to ask questions. Cheers.