2 can be written as 8/4 so 8/4 + 2/4 = 10/4 
it you meant (2+2)/4 then that is 1
        
                    
             
        
        
        
Answer:
12 D. Is the answer 
Step-by-step explanation:
The equation we will use is  
1
6
 +  
1
x
 =  
1
4
. Solve the equation by multiplying each term by the LCM of the denominator, 12x. The equation is now 2x + 12 = 3x. We solve and find x = 12. It will Marcus 12 hours to paint the room alone.