Answer:
42 is the answer to your problem
Explanation:
use PEMDAS witch means Parentheses, Exponents, Multiplication/Division, Addition/Subtraction and you use it in this order
so first we use Multiplication because i see no Parentheses or Exponents to solve
so i multiply -6 by -5 to get 30
then i add 30 to 12 and i do this because i see no Division signs
so when i add 30 to 12 i get 42
i hope this helps