Answer:
12x-13
Explanation:
First using PEMDAS you would solve the parenthesis multiply 2x by 3 and -4 by 3 which would form a equation -> 6x-12, then add on the other following equation. 6x-12+6x-1 as now it's just addition and subtraction it doesn't really matter what order you go in. Add both of the 6x's to get 12x and -12 and -1 to get -13 and your answer will be 12x-13. Hope this helps!