Answer: I am going to put a link
maybe its going to help you?
Step-by-step explanation:
http://s3.amazonaws.com/illustrativemathematics/illustration_pdfs/000/001/217/original/illustrative_mathematics_1217.pdf?1390751150
 
        
             
        
        
        
Answer:72
Step-by-step explanation:
You multiply the amount of pies(4) by the amount of slices per pie(18) to get your amount of slices(72)
 
        
                    
             
        
        
        
<span>To divide one fraction by another, invert (turn upside-down) the second fraction, then multiply.</span>
        
             
        
        
        
Add -27 to 6
to get your answer make sure to actually put the negative signs and you'll get the answer