Well what you want to do is isolate v to make it look either like this:
v=
or
=v
It doesn't matter where the v is placed as long as it's by itself.
The first step would be to subtract 9v from +6 then your equation would look like this:
3v=6
you aren't finished, though, you still have to isolate v so you divide 3 off of v because you do the inverse operation of whatever it is since 3v is multiplication you divide it so:
3/3v=6/3
your answer is:
v=2