Let's start by defining our unknown number.
Let's call it x.
Now, Let's handle the first part of it. 3 more than five times a number. That can be represented by the following

Now we handle the second part, "Thirty more than twice the number"
Which can be represented by

So, now we set them equal, since it tells us that these expressions are the same. Then we just solve the equation

The answer is 9