Question 1107839
 2x-y=9;3x+4y=-14 
Solution :
 {x,y} = {2,-5} 

Solve by Substitution :
 Solve equation for the variable  y  
 
      y = 2x - 9

 Plug this in for variable  y  in equation 

       3x + 4•(2x-9) = -14
       11x = 22
Solve equation  for the variable  x  


      11x = 22 

     x = 2 
 By now we know this much :

    x = 2
    y = 2x-9
 Use the  x  value to solve for  y  

    y = 2(2)-9 = -5 
Solution :
 {x,y} = {2,-5} 

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