The answer is 2.
The commutative property of addition says that no matter how you change the order of the numbers in your equation, the sum will not change.
So we could rewrite your equation like this -

And then you add 7 to -5. If you're using a number line, you'd simply start at 5 and move 7 spaces to the right.
Another way to solve this problem is to remove the addition sign and the parenthesis so that the negative sign (-) becomes a subtraction sign, which makes our equation look like this -
Rewriting the equation makes it look a lot less complicated, and therefore easier to solve.

I hope this helps you!