 <translate> Ganin ra'ayin tunani na hankali, samar da tambaya mai ma'ana da amsa. Dalili: Idan n shine adadin takardun kudi na $ 20 to, 2n shine adadin takardun kudi na $ 10. Don haka lissafin zai zama $10 (n) + $20 (n) = $120. Ta hanyar haɗuwa da irin waɗannan sharuɗɗa, daidaitattun ya zama 40n = 120. Don haka, darajar n wadda take wakiltar adadin takardun kudi na $20 ita ce 120 / 40 = 3.  Tambaya da amsa: <ibo> N'iburu n'uche usoro nke echiche, nye ajụjụ na azịza ezi uche dị na ya. Nkọwa: Ọ bụrụ n bụ ọnụọgụ ego dọla iri abụọ, mgbe ahụ 2n bụ ọnụọgụ ego dọla iri. Ya mere, nha anya ga-abụ $10 (n) + $20 (n) = $120. Site n'ijikọta okwu ndị yiri ibe ha, otu ihe ahụ na-aghọ 40n = 120. N'ihi ya, uru nke n nke na-anọchi anya ọnụ ọgụgụ nke 20 dollar bụ 120 / 40 = 3.  Ajụjụ na azịza: 