There are two ways, which really are the same conceptually.
You can divide both sides of the equation by 6. Or you can multiply both sides of the equation by \(\displaystyle \frac{1}{6}.\)
It may be a little less confusing to multiply, but it really makes no difference because multiplying 6 and \(\displaystyle \frac{1}{6}\) or dividing 6 by 6 gets you to the exact same place. So now the right side of the equation is p + q because the 6 is gone. Does that make sense?
What is on the left side now? Can you take it the rest of the way?