Answer:
73 degrees
Step-by-step explanation
All quadrilaterals have interior angles that add up to 360 degrees
The sum of all the angles in a quadrilateral, a four-sided shape is 360 degrees, so we get the equation:
[tex]x + 127 +87 + 73 = 360\\x + 287 = 360\\x = 73[/tex]
Therefore x = 73.
Hope that helps!
