Baker sold w cakes. If he had made x cakes initially How many more cakes did baker make than those he sold?
First, we need to find out how many cakes Baker made in total. We know that he sold w cakes, and we know that he made x cakes initially. This means that he must have made w + x cakes in total. 

Now, we need to find out how many more cakes Baker made than those he sold. To do this, we need to subtract the number of cakes he sold from the number of cakes he made in total. We know that he sold w cakes, so he must have made w + x - w cakes. 

This means that Baker made x cakes more than those he sold.

Therefore, the answer (symbolic expression) is: 

x