One of these six equations below does not belong to the group. Which one? and why?

[![enter image description here](https://i.stack.imgur.com/fJ4rW.png)](https://i.stack.imgur.com/fJ4rW.png)

Text

10+14=23

10+15=24

10+16=25

10+17=26

10+18=27

10+19=28