Respuesta :

Answer:

-15a-10b-30c

Step-by-step explanation:

(-8a-5a-10c)-(2a+10b+20c)

(-13a-10c)-(2a+10b+20c)

(-13a-10c)-2a-10b-20c

-15a-10b-30c

Answer:

-15a-30c-10b

Step-by-step explanation:

(-8a-5a-10c)-(2a+10b+20c)

(-13a-10c)-2a-10b-20c

-13a-10c-2a-10b-20c

-15a-30c-10b