Three of the following steps are used in writing a mixed number as an improper fraction. which step does not belong?

I don't see the steps, but the steps that I use are:
1. Multiply the denominator by the whole number 
2. Then you add the numerator to your sum.
3. The number that you just got by doing those steps is now going to be your numerator and your old denominator is going to stay your denominator.

Example:

2 2/3 
3*2=6
6+2=8
8/3 is your new answer.