Respuesta :

Answer:

8x + 12

Step-by-step explanation:

3(x + 4) + 5x

3x + 12 + 5x

8x + 12

Answer:

4(2x+3)

Step-by-step explanation:

3(x+4)+5x

3x+12+5x

8x+12

4(2x+3)