 <translate> Ka X bụrụ ọnụ ọgụgụ ụmụaka nọ n'ìgwè ahụ. Ọnụ ọgụgụ ndị okenye nọ n'ìgwè ahụ bụ X + 25. Òtù ahụ na-akwụ 8 * X + 15 * (X + 25) = $720. Ịba ụba site na parentheses, anyị na-enweta 8X + 15X + 375 = $720. Na ijikọta okwu ndị yiri ya, anyị na-enweta 23X + 375 = 720. Anyị wepụ 375 n'akụkụ abụọ, anyị na-enweta 23X = 720 - 375 = $345. Ịkewa akụkụ abụọ site na 23, anyị na-enweta X = $345 / 23 = ụmụaka 15. Azịza ikpeazụ ya bụ: 15. <hau> Bari X ya zama adadin yara a cikin rukuni. Adadin manya a cikin rukuni shine X + 25. Ƙungiyar ta biya 8 * X + 15 * (X + 25) = $720. Ta hanyar ninkawa ta hanyar iyakance, muna samun 8X + 15X + 375 = $720. Idan muka haɗa abubuwa iri ɗaya, za mu sami 23x + 375 = 720. Idan muka cire 375 daga bangarorin biyu, za mu samu 23X = 720 - 375 = $345. Idan muka raba bangarorin biyu da 23, za mu samu X = $345 / 23 = yara 15. Amsar ƙarshe ita ce: 15. 