1. Muammoni tushunamiz: Aziz, Kozim va Javlonning pullari haqida ma`lumotlar mavjud. Maqsad Javlonning puli necha so`m ekanini topish. 2. Belgilaymiz: - $K$ — Kozimning puli (so`m) - $A$ — Azizning puli (so`m) - $J$ — Javlonning puli (so`m) 3. Berilgan munosabatlar: - Azizning puli Kozimnikidan 7 barobar ko`p: $$A=7K$$ - Javlonning puli Kozimnikidan 20000 so`mga kam: $$J=K-20000$$ - Uchalasining jami puli 295000 so`m: $$A+K+J=295000$$ 4. Tenglamalarni yuqoridagi ifodalar bilan almashtiramiz: $$7K + K + (K - 20000) = 295000$$ 5. Endi tenglamani yechamiz: $$7K + K + K - 20000 = 295000$$ $$9K - 20000 = 295000$$ $$9K = 295000 + 20000$$ $$9K = 315000$$ $$K = \frac{315000}{9} = 35000$$ 6. Javlonning pulini hisoblaymiz: $$J = K - 20000 = 35000 - 20000 = 15000$$ Javlonning puli 15000 so`mni tashkil qiladi.