Answer:
[tex]\huge\boxed{x=12}[/tex]
Step-by-step explanation:
If B is the midpoint of line AC, we know that lines AB and BC will be equivalent to each other.
Since we know the measures of AB and BC, we can just set these expressions equal to each other and find the value of [tex]x[/tex].
[tex]6x - 27 = 3(x+3)[/tex]
Let's simplify this equation until we have [tex]x[/tex] on one side of it.
[tex]6x-27=3x+9\\\\6x=3x+36\\\\3x=36\\\\x=12[/tex]
Hope this helped!
