Answer:
7/10
Step-by-step explanation:
3/10+2/5
You have to make like denominators
So you multiply 2/5 by 2 since 1/ is the common denominator.
Then you add them 
Hope this helped
 
        
                    
             
        
        
        
Answer: F 3 D 2
Step-by-step explanation:
 
        
             
        
        
        
Answer:
-2x+4
Step-by-step explanation:
2(x+2) - 4x
Distribute
2x+4 - 4x
Combine like terms
-2x+4
 
        
                    
             
        
        
        
Answer: i think itss A???
        
                    
             
        
        
        
The last expression shows the sum of three terms. The sum is the amount resulting in addition.
The answer is x + 3 + x