The issue you are having will probably become clearer once you compute and display the difference of your (allegedly) equal values. My wager is on the results not being zero as normal mathematics would require. Should that be the case, and even if not, you should understand "<u>[What Every Computer Scientist Should Know About Floating-Point Arithmetic](https://docs.oracle.com/cd/E19957-01/806-3568/ncg_goldberg.html)</u>" if you are going to be using floating point values. Scheme has a better name for them, which is "inexact".