How to solve 2+1/6a=-4. what does a equal?

First you should add -2 on both sides of the equation:
1/6a = -4 -2 
1/6a = -6 
so now you should multiply both sides by 6 and you will have:
a = -6 * 6 
a = -36 :)))
i hope this is helpful
have a nice day