Respuesta :

Answer:

13y + 1/3 + 6m

Step-by-step explanation:

6y + 4/15 + 9m + 1/15 + 7y - 3m = 6y +1/3 + 9m + 7y - 3m = 13y + 1/3 + 6m

the answer would be 6m+13y+1/3