Respuesta :

kenzie2925

Answer:

12m + 9

Step-by-step explanation:

3(5m) is 15m

3(3) is 9

which makes 15m + 9

then 15m - 3m is 12m

maggiem1900

Answer:

12m+9

Step-by-step explanation:

You first need to distributive the 3 into the parentheses:

3(5m +3) - 3m

15m + 9 - 3m

Next, you need to combine like terms:

15m + 9 - 3m

12m + 9

So the correct answer is 12m + 9. Hope this helps!