Respuesta :

Answer:

9a+b

Step-by-step explanation:

3(a+b)+6a-2b

Distribute

3a+3b +6a -2b

Combine like terms

3a+6a+3b-2b

9a+b

Answer:

The answer is 9a+b

Step-by-step explanation:

3a+3b+6a+-2b

(3a+6a)+(3b+-2b)

=9a+b