Does anyone know how to finish it or did I do it right?? I’m confused if I have to cancel out the 6x and leave the 3 over x or leave it as it is.

Step-by-step explanation:

From your last step, divide by 3 throughout.

You cannot divide by 6x throughout because 3 cannot be divided by 6x.

Another way to do it is:

However, if the question requires you to leave your answer in a single fraction in its simplest form, only the first answer is accepted.

6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

factor trees are nice.