Answer: 7x + 3
Step-by-step explanation: To simplify, notice that there are two terms that contain an x in this problem and they are 2x and 7x.
Since both terms contain an x, you can add them together.
So 7x + 2x simplifies to 9x.
Now we have 7x + 3.
Now, you might think that 7x + 3 simplifies to 10x but that's not the case.
7x + 3 can actually not be simplified.
In order for you to be able to add two terms together, you need to have variables that are exactly the same.
