Plug in the first equation into the he second equation
3x-(2x+7)=-9
3x-2x-7=-9
x-7=-9
x=-2
plug in x=-2 into the first equation 
y=2(-2)+7
y=-4+7
y=3
answer: (-2,3)
        
                    
             
        
        
        
Answer:
The answer is C!!! blah blah blah 20 characters long 
 
        
                    
             
        
        
        
Answer:
A
Step-by-step explanation: