If you have something like this, you should always do what's in the parentheses first.
Here is the order:
Parenthesis
Exponents
Division/multiplication
Addition/subtration
You'll always start inside of the parenthesis if there are any. So if you had 2 (7+3) -4, you would start by doing what's inside and have this left 2 (10) -4 (after that do it left to right)
Your question is 3(4+3•5)-5
We have to do (4+3•5) first.
REMEMBER THE ORDER - YOU MUST DO MULTIPLICATION AND DIVISION BEFORE ADDITION AND SUBTRATION.
So you will have this. (4+15)
Add as normal and you get 19.
Now we have 3(19)-5
You can already do this left to right.
Three times nineteen is 57, minus five 52.
Your answer: B
