1) Have you written: ?

If so, multiply both sides of the equation by 3X.

Divide both sides by 3Y.

2)

Add W to both sides.

Divide both sides by V.

3)

Somehow, after looking at the first two, this one seems a bit out of place. I won't explain each step. I'll just perform them.

I don't know how clean that last one is. Maybe some others will critique it.