r uchun yechish
r=4
Baham ko'rish
Klipbordga nusxa olish
r-3\left(1-6r-4\right)=85
-2 ga 3r+2 ni ko'paytirish orqali distributiv xususiyatdan foydalanish.
r-3\left(-3-6r\right)=85
-3 olish uchun 1 dan 4 ni ayirish.
r+9+18r=85
-3 ga -3-6r ni ko'paytirish orqali distributiv xususiyatdan foydalanish.
19r+9=85
19r ni olish uchun r va 18r ni birlashtirish.
19r=85-9
Ikkala tarafdan 9 ni ayirish.
19r=76
76 olish uchun 85 dan 9 ni ayirish.
r=\frac{76}{19}
Ikki tarafini 19 ga bo‘ling.
r=4
4 ni olish uchun 76 ni 19 ga bo‘ling.
Misollar
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