Answer:
c
Step-by-step explanation:
answer is c on edg 
 
        
             
        
        
        
Answer:


Step-by-step explanation:
Write the system


Solve by Elimination.
 multiply the second equation by -3.


Add the Equations.


Plug this back in one of the equations.


 
        
                    
             
        
        
        
Answer:
3(3x-1)
Step-by-step explanation:
3(2x-1)+3 
3(2x-1x)
3(3x-1)
3(3x-1)
 
        
             
        
        
        
Need some more info, what are the dimensions of the bricks?
        
             
        
        
        
Answer:
the first one
Step-by-step explanation:
(-5+5) will equal 0. Because of the zero property no matter what you multiply it by it will equal 0. Same thing with (9-9)