n+n+1=9(n+2)+2 eching

$$n + n + 1 = 9 ( n + 2 ) + 2$$

n uchun yechish

$$n = -\frac{19}{7} = -2\frac{5}{7} \approx -2,714285714$$

Chiziqli tenglamalarni yechish bo'yicha qadamlar

2n ni olish uchun n va n ni birlashtirish.

$$2n+1=9\left(n+2\right)+2$$

9 ga n+2 ni ko'paytirish orqali distributiv xususiyatdan foydalanish.

$$2n+1=9n+18+2$$

20 olish uchun 18 va 2'ni qo'shing.

$$2n+1=9n+20$$

Ikkala tarafdan 9n ni ayirish.

$$2n+1-9n=20$$

-7n ni olish uchun 2n va -9n ni birlashtirish.

$$-7n+1=20$$

Ikkala tarafdan 1 ni ayirish.

$$-7n=20-1$$

19 olish uchun 20 dan 1 ni ayirish.

$$-7n=19$$

Ikki tarafini -7 ga bo‘ling.

$$n=\frac{19}{-7}$$

\frac{19}{-7} kasri manfiy belgini olib tashlash bilan -\frac{19}{7} sifatida qayta yozilishi mumkin.

$$n=-\frac{19}{7}$$