Step-by-step explanation:
-7 2/3+(-5 1/2)+ 8 3/4
-13 1/6+ 8 3/4
-4 5/12 
Answer: -4 5/12
 
        
             
        
        
        
Answer:
150 degrees
Step-by-step explanation:
- Let the supplement = x  
- So the angle you want is 5x  
-  Then [x + 5x] = 180 because they are supplementary.  
-  Solving. 6x = 180. Then x = 30.  
- So the angle is 5x = 5×30 = 150 degrees 
 
        
             
        
        
        
Answer:
1
Step-by-step explanation:
1/4+3/4 this makes a plus because a -&- makes +
1+3/4
4/4
1
 
        
                    
             
        
        
        
Answer:
20
Step-by-step explanation: