Answer:
108 degrees
Step-by-step explanation:
Find angleA. Since angleA is a vertical angle to angleB, AngleA is 63. Since all measures of a triangle must equal 180. AngleC is 180-(45+63) or AngleC measures 72 degrees. Since AngleC and AngleX is a linear pair, they must equal 180. Therefore, AngleX equals 180-72 or 108 degrees
