Jesse's room is w feet wide and x feet long. How much longer is her room than it is wide?
First, we need to figure out how long her room is. We know that her room is w feet wide and x feet long. So, we can say that her room is x feet long. 

Now, we need to figure out how wide her room is. We know that her room is w feet wide and x feet long. So, we can say that her room is w feet wide. 

Now, we need to figure out how much longer her room is than it is wide. We know that her room is x feet long and w feet wide. So, we can say that her room is x-w feet longer than it is wide.