P=69 degrees
Q=71 degrees
R=40 degrees
Explanation
All triangles equal up to 180 degrees. 
First add all numbers without x. 
Then add all xs. 
5x+20=180
Subtract 20 from 180
5x=160
Divide 160 by 5
x=40
        
             
        
        
        
Do we have to solve for M if so, the answer is 
m-37  = 56
m =56 + 37 
m = 93 
hope it's helpful
 
        
             
        
        
        
50 might be the answer because 12÷6=2 so I just multiplied 15×2 and that equaled my answer, 50
        
                    
             
        
        
        
Answer: are they asking for the answer of the dotted line? If so, it might be 5 since it's the dotted line is opposing the side labeled 5cm.
Hope this helps:)
Step-by-step explanation: