Answer:

Explanation:
Supplementary angles are two or more angles that add up to 180 degrees. They can be any two angles, regardless of where they are located in a plane. Supplementary angles always form a straight angle when they are put together.
In this case:

So, we can say that:

Substituting given value:

Simplify like terms:

Subtract 4 on both sides:


Divide both sides by 11, we get


Now, we can find m angle F by substituting value of x, we get:

Therefore,
