For the following example:

5 * 6 - 2 * 4 = 30 - 8

Does this represent the substitution property? I am assuming yes since you are substituting 5*6 for 30 on the other side of the equation.

Thank you to those who answer. I was not sure how to send a thank you reply.

looks like substitution to me.

To send a reply, just submit a new "answer"