Answer:
should be 112
Step-by-step explanation:
 You take both 12 and 14 and multiply. Then, take 8 and 7 and multiply. Take 168 and subtract 56,and there's your answer 
 
        
                    
             
        
        
        
It woulds be x+15 because if you take 2x and subtracted from the 3x then you get x and then you add the 9 and 6 witch you get 15 
        
                    
             
        
        
        
The slope of that line is m=2/5
        
             
        
        
        
If you mean that you want to solve the equation for v, then all you need to do is to multiply both sides by 3:
