# Whats up with this math

**URL:** <https://forum.kirupa.com/t/whats-up-with-this-math/143287>\
**Category:** Uncategorized\
**Created:** [April 4, 2005, 9:02pm UTC](https://forum.kirupa.com/t/whats-up-with-this-math/143287 "2005-04-04T21:02:57Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![JamesTheSwift](https://avatars.discourse-cdn.com/v4/letter/j/54ee81/32.png) [@JamesTheSwift](https://forum.kirupa.com/u/JamesTheSwift)\
**Post date:** [April 4, 2005, 9:02pm UTC](https://forum.kirupa.com/t/whats-up-with-this-math/143287/1 "2005-04-04T21:02:57Z")

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**bottom = track.\_height + track.\_y;**  
I am really out of it today so this is prolly a dumb question…I have a variable ActionScript:  
bottom = track.[color=#000084]\_height[/color] + track.[color=#000084]\_y[/color];

track.\_height is 170 and track.\_y is -169, so when i add them so, why does it give me the answer 87.5 when i trace(bottom); thanks