Respuesta :

Answer:

9mn - 17np -2n

Step-by-step explanation:

Answer:

-2n + 9nm - 17np

Step-by-step explanation:

1/3n * -6 = -2n

1/3n * 27m = 9nm

1/3n* -51p = -17np

-2n + 9nm - 17np