Let's break the equation in several step to make things more clear: first of all, the numerator of the left hand side simplifies to

Similarly, the denominator becomes

Dividing by a fraction means to multiply by the inverse of that fraction:

So, in your case, we have

So, the equation has become

Multiply both sides by 3(9x-6):

Subtract 24x from both sides, and add 18 to both sides:
