1/3 = 8/24
1/8 = 3/24
use 24 since it's the LCM of 8 and 3
8-3/24 = 5/24
 
        
             
        
        
        
It is two units shifted downwards. you can see it by substituting x=0 for both equations
        
             
        
        
        
Multiply each price by the discount into a decimal (move the decimal place over 2 on the percents) then subtract that from the regular price and that's sale price
        
                    
             
        
        
        
Answer is 7950,72. You can solve it's task on calculator.
        
             
        
        
        
Hi, there! 
I'm not sure what you want to solve in these equations. Please provide me with more details. I am sorry if you were looking for answers to the question, but I simply do not know what you are asking for. 
Thanks!