Answer:
 -7/x
Step-by-step explanation:
first, you combine the terms together to get -7x^-1. you cant have negative exponents in the numerator so you move the x^-1 to the denominator. once it move its becomes positive then. 
 
        
             
        
        
        
Answer: use order of operstions
Step-by-step explanation:
 
        
                    
             
        
        
        
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2/1
Step-by-step explanation:
_1/3y=_1
y=_1+3/1
y=2/1
 
        
             
        
        
        
3x>=8 
It should be  
Three is less than or equal to eight