To my knowledge, the answer should be there is no difference since I found the sum, however the answer is something else,
could someone please explain
![To my knowledge the answer should be there is no difference since I found the sum however the answer is something else could someone please explain class=](https://us-static.z-dn.net/files/dd4/a1cd7d244a86343656aac60688a17262.png)