Use the relationships between the angles to solve for x  
x = _____ degrees
                                             
                                          
                                          
                                        
											 
											Answer:
x = 100
Step-by-step explanation:
The sum of the opposite interior angles of a triangle is equal to the exterior angle
x+15 = 115
Subtract 15 from each side
x+15-15 = 115-15
x = 100