Answer:

Step-by-step explanation:
Since each side of a line is 180 degrees, we can write the following system of equations:

Add both equations to solve for
:

Now substitute
into
to solve for
:

Finish by substituting both variables to solve for
:

The LCD is 10 because you can multiply 2/5 by 2 to get 4/10
Answer:
M
Step-by-step explanation:
The angle bisector is M