5v-6=3v+10 i really hate math but i need

OK.  We could have gotten along nicely without the comment.

-5v - 6 = 3v + 10

I think what you're trying to find is the number that ' v ' must be
in order to make the equation a true statement.  That number
is called the 'solution' of the equation.

To find it, you have to massage and manipulate the equation around
until you have ' v ' and nothing else on one side.  You can do anything
you want to a whole side of the equation, but whatever you do to one
side, you must immediately do to the other side.  Here's one way you
could go about it:

                                            -5v - 6 = 3v + 10

Add  5v  to each side:                 -6 = 8v + 10

Subtract  10  from each side:    -16 = 8v

Divide each side by  8 :             -2  =  v             

Now, was that so painful ?

The answer is option c.