Respuesta :

3y+21+8y
11y+21 is the answer

Answer:

11y + 21

Step-by-step explanation:

Distribute:

= (3)(y) + (3)(7) + 8y

= 3y + 21 + 8y

Combine Like Terms:

= 3y + 21 + 8y

= (3y+8y) + (21)

= 11y + 21