3x-4+02x=15+12x+21 eching

$$3x-4+02x=15+12x+21$$

x uchun yechish

$$x = -\frac{40}{9} = -4\frac{4}{9} \approx -4,444444444$$

Chiziqli tenglamalarni yechish bo'yicha qadamlar

0 hosil qilish uchun 0 va 2 ni ko'paytirish.

$$3x-4+0x=15+12x+21$$

Har qanday sonni nolga ko‘paytirsangiz, nol chiqadi.

$$3x-4+0=15+12x+21$$

-4 olish uchun -4 va 0'ni qo'shing.

$$3x-4=15+12x+21$$

36 olish uchun 15 va 21'ni qo'shing.

$$3x-4=36+12x$$

Ikkala tarafdan 12x ni ayirish.

$$3x-4-12x=36$$

-9x ni olish uchun 3x va -12x ni birlashtirish.

$$-9x-4=36$$

4 ni ikki tarafga qo’shing.

$$-9x=36+4$$

40 olish uchun 36 va 4'ni qo'shing.

$$-9x=40$$

Ikki tarafini -9 ga bo‘ling.

$$x=\frac{40}{-9}$$

\frac{40}{-9} kasri manfiy belgini olib tashlash bilan -\frac{40}{9} sifatida qayta yozilishi mumkin.

$$x=-\frac{40}{9}$$