Rational,real,integer,whole number,natural number
        
             
        
        
        
Alright First you combine the like terms. 
9n - 3n = 6n 
21 - 24 = -3 
Rewrite the simplified equation
6n - 3 = 0
Solve for n 
6n = 3 
n = 3/6 
n = 1/2 
Ask if you need more help! :)
        
             
        
        
        
It’s d I believe I think I’m not so sure tho I’m pretty sure
        
                    
             
        
        
        
A regular dice ???????????
        
             
        
        
        
Answer:
FE
Step-by-step explanation:
The radius of a circle is the line segment from the centre of the circle to a point on the circle.
F is the centre of the circle, thus
FA, FE, FD, FC and FB are all radii of the circle