Question

solve for x and y:2x+y=6 and 2x-y=2

Answer 1

by simultaneous linear equation we can find x=2&y=2 and substitute there u get the correct answer

Answer 2

// Solve equation [1] for the variable  y  
 

[1] y = -2x + 6

// Plug this in for variable  y  in equation [2]

  [2] 2x - (-2x+6) = 2   [2] 4x = 8

// Solve equation [2] for the variable  x  

  [2] 4x = 8    [2] x = 2 

// By now we know this much :

  x = 2   y = -2x+6

// Use the  x  value to solve for  y  

  y = -2(2)+6 = 2 

Solution :

 {x,y} = {2,2}