# Order of rules in Symbolics / SymbolicUtils

**URL:** https://discourse.julialang.org/t/order-of-rules-in-symbolics-symbolicutils/86383
**Category:** Modelling & Simulations
**Tags:** symbolics
**Created:** [August 26, 2022, 1:42pm UTC](https://discourse.julialang.org/t/order-of-rules-in-symbolics-symbolicutils/86383 "2022-08-26T13:42:27Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![qwerty](https://avatars.discourse-cdn.com/v4/letter/q/4491bb/32.png) [@qwerty](https://discourse.julialang.org/u/qwerty)
#### Post date: [August 26, 2022, 1:42pm UTC](https://discourse.julialang.org/t/order-of-rules-in-symbolics-symbolicutils/86383/1 "2022-08-26T13:42:28Z")

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Does the order of the rules in Symbolics/SymbolicUtils matter when simplifying?

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### Author: ![ChrisRackauckas](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/chrisrackauckas/32/77_2.png) [@ChrisRackauckas](https://discourse.julialang.org/u/ChrisRackauckas)
#### Post date: [August 26, 2022, 1:50pm UTC](https://discourse.julialang.org/t/order-of-rules-in-symbolics-symbolicutils/86383/2 "2022-08-26T13:50:12Z")

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Yes. That’s always a quirk of rule-based simplifiers.