n uchun yechish
n = \frac{291}{7} = 41\frac{4}{7} \approx 41,571428571
Baham ko'rish
Klipbordga nusxa olish
7n-91=28\times 7+4
Tenglamaning ikkala tarafini 7 ga ko'paytirish.
7n-91=196+4
196 hosil qilish uchun 28 va 7 ni ko'paytirish.
7n-91=200
200 olish uchun 196 va 4'ni qo'shing.
7n=200+91
91 ni ikki tarafga qo’shing.
7n=291
291 olish uchun 200 va 91'ni qo'shing.
n=\frac{291}{7}
Ikki tarafini 7 ga bo‘ling.
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