Move some redundant code from couple and uncouple methods
Move some redundant code from couple and uncouple methods

cswiercz/sympy,aktech/sympy,jaimahajan1997/sympy,VaibhavAgarwalVA/sympy,wanglongqi/sympy,liangjiaxing/sympy,drufat/sympy,toolforger/sympy,sahmed95/sympy,saurabhjn76/sympy,lidavidm/sympy,toolforger/sympy,saurabhjn76/sympy,sahmed95/sympy,shipci/sympy,Shaswat27/sympy,atsao72/sympy,Vishluck/sympy,Vishluck/sympy,kmacinnis/sympy,sunny94/temp,diofant/diofant,abloomston/sympy,debugger22/sympy,yukoba/sympy,cswiercz/sympy,kevalds51/sympy,cccfran/sympy,Shaswat27/sympy,asm666/sympy,bukzor/sympy,moble/sympy,rahuldan/sympy,jerli/sympy,skidzo/sympy,chaffra/sympy,oliverlee/sympy,oliverlee/sympy,jerli/sympy,hargup/sympy,lindsayad/sympy,sahilshekhawat/sympy,madan96/sympy,atreyv/sympy,skirpichev/omg,sahilshekhawat/sympy,flacjacket/sympy,garvitr/sympy,MechCoder/sympy,aktech/sympy,bukzor/sympy,lidavidm/sympy,atreyv/sympy,Designist/sympy,MechCoder/sympy,Mitchkoens/sympy,grevutiu-gabriel/sympy,grevutiu-gabriel/sympy,asm666/sympy,jamesblunt/sympy,Davidjohnwilson/sympy,abloomston/sympy,sampadsaha5/sympy,cswiercz/sympy,Vishluck/sympy,amitjamadagni/sympy,Arafatk/sympy,ga7g08/sympy,ahhda/sympy,dqnykamp/sympy,emon10005/sympy,yashsharan/sympy,vipulroxx/sympy,ChristinaZografou/sympy,Curious72/sympy,kaichogami/sympy,kumarkrishna/sympy,mafiya69/sympy,chaffra/sympy,mcdaniel67/sympy,shipci/sympy,emon10005/sympy,jbbskinny/sympy,skidzo/sympy,amitjamadagni/sympy,meghana1995/sympy,iamutkarshtiwari/sympy,souravsingh/sympy,yashsharan/sympy,Titan-C/sympy,shikil/sympy,maniteja123/sympy,sahilshekhawat/sympy,kaichogami/sympy,MechCoder/sympy,postvakje/sympy,maniteja123/sympy,farhaanbukhsh/sympy,VaibhavAgarwalVA/sympy,sahmed95/sympy,kmacinnis/sympy,atreyv/sympy,sampadsaha5/sympy,Designist/sympy,madan96/sympy,abhiii5459/sympy,Sumith1896/sympy,ga7g08/sympy,mafiya69/sympy,AunShiLord/sympy,kaushik94/sympy,AkademieOlympia/sympy,liangjiaxing/sympy,MridulS/sympy,Titan-C/sympy,sampadsaha5/sympy,drufat/sympy,Curious72/sympy,Arafatk/sympy,jamesblunt/sympy,hrashk/sympy,dqnykamp/sympy,Mitchkoens/sympy,maniteja123/sympy,debugger22/sympy,meghana1995/sympy,Sumith1896/sympy,wyom/sympy,wanglongqi/sympy,jaimahajan1997/sympy,cccfran/sympy,Gadal/sympy,pbrady/sympy,rahuldan/sympy,garvitr/sympy,lidavidm/sympy,kaichogami/sympy,sunny94/temp,ahhda/sympy,pandeyadarsh/sympy,yukoba/sympy,AkademieOlympia/sympy,cccfran/sympy,wyom/sympy,Gadal/sympy,wanglongqi/sympy,ChristinaZografou/sympy,AkademieOlympia/sympy,VaibhavAgarwalVA/sympy,Gadal/sympy,hrashk/sympy,bukzor/sympy,beni55/sympy,Titan-C/sympy,kumarkrishna/sympy,debugger22/sympy,rahuldan/sympy,Arafatk/sympy,ahhda/sympy,hrashk/sympy,farhaanbukhsh/sympy,toolforger/sympy,souravsingh/sympy,kaushik94/sympy,jaimahajan1997/sympy,moble/sympy,kevalds51/sympy,Curious72/sympy,hargup/sympy,sunny94/temp,jbbskinny/sympy,grevutiu-gabriel/sympy,AunShiLord/sympy,srjoglekar246/sympy,Shaswat27/sympy,abhiii5459/sympy,lindsayad/sympy,atsao72/sympy,shikil/sympy,iamutkarshtiwari/sympy,atsao72/sympy,wyom/sympy,souravsingh/sympy,shikil/sympy,pbrady/sympy,aktech/sympy,AunShiLord/sympy,Sumith1896/sympy,mcdaniel67/sympy,liangjiaxing/sympy,pbrady/sympy,jerli/sympy,Mitchkoens/sympy,postvakje/sympy,lindsayad/sympy,garvitr/sympy,iamutkarshtiwari/sympy,mcdaniel67/sympy,chaffra/sympy,ga7g08/sympy,ChristinaZografou/sympy,beni55/sympy,emon10005/sympy,kaushik94/sympy,abhiii5459/sympy,mafiya69/sympy,Davidjohnwilson/sympy,jbbskinny/sympy,jamesblunt/sympy,asm666/sympy,yashsharan/sympy,drufat/sympy,kumarkrishna/sympy,vipulroxx/sympy,dqnykamp/sympy,kmacinnis/sympy,MridulS/sympy,madan96/sympy,Designist/sympy,skidzo/sympy,oliverlee/sympy,yukoba/sympy,farhaanbukhsh/sympy,postvakje/sympy,vipulroxx/sympy,pandeyadarsh/sympy,Davidjohnwilson/sympy,meghana1995/sympy,abloomston/sympy,shipci/sympy,pandeyadarsh/sympy,moble/sympy,MridulS/sympy,saurabhjn76/sympy,hargup/sympy,kevalds51/sympy,beni55/sympy