Answer:
x= 4
m<ABC= 56
Explanation:
since BD bisects, both sides of the angle are equal.
So we can set up an equation like this: <ABD=<CBD
(9x-8)=(5x+8) calculate for x
you'll find x=4
then put four into one of the angle equations
9(4)-8=28
now we know each side of the angle is 28, double it to find the whole (<ABC)
28+28=56