Answer:
Using PEMDAS we can see that P or parenthesis is first so we would subtract 5 from 5 in the beginning. That would result in a 0 which would then get multiplied with 12 to still have 0.
Now that we completed that part, the only thing that we have left to do is to multiply the last two numbers, 3 and 5.
Therefore, our final solution is 15.
Hope this helps!