Hey!
------------------------------------------------
I'm going to assume that the equation is 6 + (-5 - 7)
~Solve what's in parenthesis
6 + (-12)
~Simplify
6 - 12
~Subtract
-6
------------------------------------------------
Hence, the answer is
![\Large\boxed{\mathsf{-6}}](https://img.qammunity.org/2020/formulas/mathematics/middle-school/zujdle1xwdf0a3exk1yraacurju52wq27y.png)
------------------------------------------------
Hope This Helped! Good Luck