Answer:
27°.
Explanation:
Vertically opposite angles are two angles that are opposite each other at a vertex and are created by two straight intersecting lines. They are also sometimes called vertical angles and congruent to each other.
In this case
53° and g° is the vertical opposite angle of 80°.
Since vertical opposite angles are equal.
So,

Subtract both sides by 53°.


Therefore, value of g is 27°.