Y= -3/7 - 1/7
Subtract the numerators only (top #) 
Y= (-3-1)/7
Y= (-3+ -1)/7
Y= -4/7
Hope this helps! :)
        
             
        
        
        
Answer:
this 2 stories are the best for kids 
 
        
                    
             
        
        
        
Answer:
The answer is A. A kingdom under one king Hope this helps ^_^
Explanation:
plz give brainliest and rating
 
        
             
        
        
        
Answer:
sample
Explanation:
sample in research  experiments means when researcher can not include and involve whole population than he or she choose representative sample which represent whole population, and result of experiment can be generalize whole population. Sample must have some characteristics like it must be random and not biased so results get not affected.