b-1/3-2b-2/5=1/2 eching

$$\frac { b - 1 } { 3 } - \frac { 2 b - 2 } { 5 } = \frac { 1 } { 2 }$$

b uchun yechish

$$b = -\frac{13}{2} = -6\frac{1}{2} = -6,5$$

Chiziqli tenglamalarni yechish bo'yicha qadamlar

Tenglamaning ikkala tarafini 30 ga, 3,5,2 ning eng kichik karralisiga ko‘paytiring.

$$10\left(b-1\right)-6\left(2b-2\right)=15$$

10 ga b-1 ni ko'paytirish orqali distributiv xususiyatdan foydalanish.

$$10b-10-6\left(2b-2\right)=15$$

-6 ga 2b-2 ni ko'paytirish orqali distributiv xususiyatdan foydalanish.

$$10b-10-12b+12=15$$

-2b ni olish uchun 10b va -12b ni birlashtirish.

$$-2b-10+12=15$$

2 olish uchun -10 va 12'ni qo'shing.

$$-2b+2=15$$

Ikkala tarafdan 2 ni ayirish.

$$-2b=15-2$$

13 olish uchun 15 dan 2 ni ayirish.

$$-2b=13$$

Ikki tarafini -2 ga bo‘ling.

$$b=\frac{13}{-2}$$

\frac{13}{-2} kasri manfiy belgini olib tashlash bilan -\frac{13}{2} sifatida qayta yozilishi mumkin.

$$b=-\frac{13}{2}$$