🌐EnglishEnglishBahasa IndonesiaEspañolРусский한국어EntityQ28458126· pop 6substitutionreplacement in a mathematical expression of some variable by another expressionAvailable in 6 languagesEspañolBahasa IndonesiaLatvianNorwegian Nynorsk한국어via Wikidata sitelinks · CC0ConnectionssubstitutionEntity