Since line t is a transversal line all angle which are perpendicular with 63 will equal to the same value (63) and also line m is a straight line where it’s total will be 180
So, 
 3x + 2x + 63 = 180
 5x + 63 = 180
 5x = 180 - 63
 5x = 117
Divide by 5 throughout
 X = 23.4degrees
        
                    
             
        
        
        
Answer:
The third one, x+(x+1)+(x+2)=-21 because x, x+1 and x+2 are three consecutive numbers. 
 
        
                    
             
        
        
        
Answer:
The answer is B
Step-by-step explanation:
 
        
                    
             
        
        
        
Isolate the variable by dividing each side by factors that don't contain the variable.
f=e-g/d