First of all be more spusific in your question
        
             
        
        
        
-2w + 20 = -17 - 17 + 4w
Combine like terms on the right side of the equation.
-2w + 20 = -34 + 4w
Add 2w to both sides.
20 = -34 + 6w
Add 34 to both sides.
54 = 6w
Divide both sides by 6.
w = 9 is your answer.
 
        
             
        
        
        
Answer:
x= -3
y= -4
Step-by-step explanation:
If 11/17 and x goes together then this is what I got.  Oh plug them in in case its wrong.  Good Luck 
 
        
             
        
        
        
Answer:
15.
Step-by-step explanation:
15 is composite because 3 * 5 = 15.
The others are prime.