Answer:
Step-by-step explanation:
look at 2=x-y=2
move this term to the left (2)
it becomes 2=x-y+2=0
and thats your results 
Examples: x^2-2x=-1, 3x-x-x+a-a=5, (x^2-1)/(x+1), 2x-(x+x)
 
        
             
        
        
        
Answer:
<h3>             a₁ = -1</h3>
Step-by-step explanation:

 
        
             
        
        
        
Step-by-step explanation:
the answer is c: 2..............