Question

Me pueden ayudar en metodo de suma y resta

Cual es el resultado de:

5x-y =13

2x+3y =12

Answer 1

Respuesta:

te sirve  {x,y} = {3,2}  

 

System of Linear Equations entered :

  [1]    2x + 3y = 12

  [2]    5x - y = 13

Graphic Representation of the Equations :

   3y + 2x = 12        y + 5x = 13  

 

 

Solve by Substitution :

// Solve equation [2] for the variable  y  

 

 [2]    y = 5x - 13

// Plug this in for variable  y  in equation [1]

  [1]    2x + 3•(5x-13) = 12

  [1]    17x = 51

// Solve equation [1] for the variable  x  

  [1]    17x = 51  

  [1]    x = 3  

// By now we know this much :

   x = 3

   y = 5x-13

// Use the  x  value to solve for  y  

   y = 5(3)-13 = 2  

Solution :

{x,y} = {3,2}  

  Processing ends successfully  

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