Answer:
Third choice
Step-by-step explanation:
the answer is the one with 
  9    18
-13   -14
 
        
             
        
        
        
Answer:
(3,2)
Step-by-step explanation:
take negative from inside bracket as x and contant outside as y, and done
 
        
             
        
        
        
3X + 5X = 136
8X = 136
X = 17 
Numbers are 51 and 85
        
             
        
        
        
Answer:
29/112
Step-by-step explanation:
3 5/8=29/8
(29/8)/14
(29/8)(1/14)=29/112
 
        
             
        
        
        
The two expressions could be : 
2 - 1/2m
2 - m / 2