Answer:
33
Explanation:
Starting off with PEMDAS, where P as in Parenthesis, E as in exponent, M as in multiplication, D as in division, A as in addition, and S as in Subtraction, let's start off by working on the first parenthesis to add.
-4+-7=-11 (when adding both negatives just pretend they aren't there then add the negative at the end).
We are left with (-11)(-3). When we multiply a negative times a negative, we end up with a positive number.
So the answer is 33.