Question

4x- y=5 x+2y = 8 1) (3,2) 2) (3,3) 3) (2,3) 4) (2,2) PLEASE HELP!!!

Answer 1

Answer:

{x,y} = {2,3}

Step-by-step explanation:

// Solve equation [2] for the variable  x  

 [2]    x = -2y + 8

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

  [1]    4•(-2y+8) - y = 5

  [1]     - 9y = -27

// Solve equation [1] for the variable  y  

  [1]    9y = 27

  [1]    y = 3

// By now we know this much :

   x = -2y+8

   y = 3

// Use the  y  value to solve for  x  

   x = -2(3)+8 = 2