ghesmat alef)dar makhrage kasrha mozdavag minevisim masalan a^2+(b-c)*-a hal az a factor migirim vabegaye a+c ,-b mighozarim dar natige makhrage kasr be 2*b*a tabdil mishavad ha ba ye makhrag moshtarak gereftan hokm mored nazar natige mishavad
ghesmat gim)az taghir motaghayer a/b=x,b/c=y,c/a=z estefade konid va sorat ra dar makhrag taghsim konid hal az taghir motaghayer gofte shode estefade kon hala 1 ra be samt chap biar va besorat 1/3+1/3+1/3 benevis hal masale be rahati hal mishavad agar moshkelibod bego