1 1/2 - 1/4
You have to have a common denominator which is 4 in this istance. 
That makes it 1 2/4 - 1/4. That equals 1 3/4. 
Hope that this helped! :)
        
                    
             
        
        
        
To know if there is a perfect square you gotta see if there is a minus sign before the second coefficient and when you square the second coefficient divided by 2 you should get the third coefficient
        
             
        
        
        
Answer:
In example when talking about some supply, half of it was sold or three fifths of what was there is gone. Fractions are a natural way of talking about sub unit quantities or just rationing supplies.
 
        
             
        
        
        
Answer:
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Step-by-step explanation:
P(3) = ⅙
P(5) = ⅙
Trials are independent so,
P(3 then 5) = 1/6 × 1/6 = 1/36