Answer:
x = 43 degrees
Explanation:
47+90 degrees = 137
that little box means that is a 90-degree angle.
(because straight angles are measured 180 degrees) :
180 - 137 = 43
that missing part between 90 degrees (the box) and 47 degrees equals 43.
because 43 is positioned from x where it is, x is also equivalent to 43 degrees.
and just for bonus that's a 90 degree angle to the right of "x" and that's a 47 degree angle to the left of "x" because these angles are all OPPOSITE.
therefore they are congruent.