Answer: use socratic you take a picture of the problem and it does it.
 
        
             
        
        
        
To solve this find the common number that can be divided by both and use that number. 
In this case, 4 is divisible by both 4 and 12, and thus the final expression would be 
4(d + 3e). 
        
                    
             
        
        
        
-12,3 ...................................
 
        
             
        
        
        
A decade is 10 years which means 1/5 is 2 years. thus making 2/5 4 years.