6 eggs= 7 days 
1 egg = x days 
7 days _
----------- = 1. 6 days per 1 egg
6 eggs
        
             
        
        
        
1 and 4 will be the expression that makes the equatio. true for all values of x to prove i have done it in the picture attached in this message 
 
        
                    
             
        
        
        
To solve this, subtract 6 from both sides of the greater than sign to get..
x is greater than -4