Order of operation

[Kumar]

-1/3[-9+10(3)] This problem is seriously giving me trouble, second day back to school & I don't remember how to subtract fractions.

 

[Kumar]

Tried to solve it. This is what I had;

-1/3[-9+10(3)]
-1/3[-9+30]
-1/3 +21
(14)
The answer I came out with was 14.