Answer:
-3mn
Step-by-step explanation:
It seems you might be missing some of the question, as you haven't given what m and n are equal to.
If the question has just given you x, then you would simply just simplify it to get -3mn.
You know that two expressions are equivalent when if you substitute in your values and simply the expressions, they have the same answer.
Try using a photo scanner
Answer:
I need help with the same thing-
Step-by-step explanation:
5 + 17a is the answer you are looking for
