54 I'm pretty sure, sorry if I'm wrong
        
             
        
        
        
The Answer is 2.1733553e+20
Hope this helps :)
        
                    
             
        
        
        
Okay so just put the 4 in for x 
and multiply 
        
             
        
        
        
Yes it is greater than 6 because of common denominator
        
                    
             
        
        
        
First you add like terms in which this case is -.46x and .16x which equals -.3x then divide 6.6 into -.3 which is -22. x = -22