Hello,
What do you mean as "the same" ?
If you try to find b such as this equation is verified, you'll find 7=1, which means that there is no solution.
NO! IT CAN'T!
That is the conclusion the earlier posts are trying to steer you towards!!
Try putting in some values of b (apart from b = 1). Do you get 1/8?? Answer Plato's question: If b = 2, is the same as ? What about when b = 3? etc.
When you divide the top and bottom of a fraction by something, ALL of the top and ALL of the bottom get divided by that something.