Can someone explain how to do this

When any angle bisects with other angle then both the angles are equal.
Then, m of angle ABD = angle CBD
ABD = 70
ABD = CBD = 70°
ABC = 70 + 70 = 140°
Answer:
Step-by-step explanation:
because both equations add up to equal abc
we can solve for x
8x+35=11x+23
subtract 8x from boths sides
35=3x+23
subtract 23 from both
12=3x
x=4
Now we can solve for Abd
8(4)+35=67degrees =ABD
11(4) +23=67degrees=CBD
67+67=134=abc
I hope this made since sorry if it doesn't
Have a wonderful day