Take second equation here, 
2x + 9 = -12
2x = -12 - 9
2x = -21
Multiply by 2, 
4x = -42
Now, substitute the vaue of 4x in 1st equation, 
-42 - y = 2
-y = 2 + 42
y = -44
In short, Your Answer would be -44
Hope this helps!
        
             
        
        
        
we have

Group terms that contain the same variable, and move the constant to the opposite side of the equation

Combine like terms

Divide by  both sides
 both sides


therefore
<u>the answer is</u>
the value of p in the linear equation  is 
 
        
                    
             
        
        
        
Answer:
its c and its right
Step-by-step explanation: