5x - 19 = 2(x - 5)
Show all work

x=3

Step-by-step explanation:

I did a 2-column proof for the explanation :)

x = 8

Step-by-step explanation:

Hi there!

We're given that OB is the angle bisector of angle AOC.

An angle bisector splits an angle into 2 equal halves. Therefore, angles AOB and BOC are equal.

We're given that angle AOB is 8x degrees and angle BOC is 16x-64 degrees.

Set up an equation:

Combine like terms:

Therefore, x = 8.

I hope this helps!