Isn't this answer 12i + 8j? You never specified what the variables were, or whether I should have variables in the answer.
Seriously? If anyone is a hw cheater, it's them. Are you too lazy to multiply 3 and 2 by 4????? Or do you just not know how to do that? If you don't know, go back to 3rd grade and learn. If you're lazy (much more likely), just use a normal calculator instead of bothering real people with questions that are simple arithmetic. Or, you can take 2 seconds to calculate for yourself. Is it really that hard??????????