Respuesta :

Answer:

See below.

Step-by-step explanation:

  • 2x + 3y. Can't be simplified.
  • 9x + 6x. Can be simplified. Simplified as 15x.
  • 4x + x. Can't be simplified.
  • 7y + 1. Can't be simplified.
  • 4y + 4x. Can't be simplified.
  • y + 2y. Can't be simplified.