Yes, is subtraction, to get their "difference".
first off, let's convert the mixed fractions, to "improper", and then subtract.

 
 
        
        
        
Cut five inches to creat the least amount of unused cardboard.
        
             
        
        
        
It would be around 138 minutes which is 2 hrs and 18 min so it would be C).
        
                    
             
        
        
        
Answer: −
3
X
−
x
−
4
Step-by-step explanation:
 
        
             
        
        
        
Switch the x and y values and isolate y, then simplify.
x=6y+5
6y=x-5
y=1/6x-5/6