Respuesta :

Step-by-step explanation:

  1. 2x - 12y  = 2(x - 6y)
  2. 2(3x + 1) = 6x + 2
  3. 3x + 12   = 3(x + 4)
  4. 6(x - 2y) = 6x - 12y
  5. 6(x + 2)  = 6x + 12
  6. 6x + 3y  = 3(2x + y) = 1/2(12x + 6y)