Solve the system be either substitution or elimination 3x-5y=21 and 2x+y=1 
       
      
                
     
    
    
    
    2  answers:
            
              
Answer: 
x = 2, y = -3. 
Step-by-step explanation: 
3x - 5y = 21
2x + y = 1 
We can use elimination by first multiply the second equation by 5:-
10x + 5y = 5  Now add this to the first equation:-
13x = 26
x = 2. 
Now plug x = 2 anto the second equation to find y:-
2(2) + y = 1
y  = 1 - 4 = -3. 
 
                                
             
                    
              
Answer: 
(2,-3)
Step-by-step explanation: 
I used substitution and rearranged the second equation to y=-2x+1. Then I replaced the y in the first equation with -2x+1. So, I got 3x-5(-2x+1)=21. When you solve that you get 13x=26 or x=2. Then you replace x with 2 in either equation and end up with y=-3.
 
                                
             
         	
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