Question

solve the following Linear pair equation x+y=5 x-y =13​

Answer 1

Answer:

Solve by Substitution :

// Solve equation [2] for the variable  x  

 

 [2]    x = y + 13

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

  [1]    (y +13) + y = -5

  [1]    2y = -18

// Solve equation [1] for the variable  y  

  [1]    2y = - 18  

  [1]    y = - 9  

// By now we know this much :

   x = y+13

   y = -9

// Use the  y  value to solve for  x  

   x = (-9)+13 = 4  

Solution :

{x,y} = {4,-9}

Step-by-step explanation: