r-3/4=2r eching

$$\frac{r-3}{4}=2r$$

r uchun yechish

$$r=-\frac{3}{7}\approx -0,428571429$$

Chiziqli tenglamalarni yechish bo'yicha qadamlar

Tenglamaning ikkala tarafini 4 ga ko'paytirish.

$$r-3=8r$$

Ikkala tarafdan 8r ni ayirish.

$$r-3-8r=0$$

-7r ni olish uchun r va -8r ni birlashtirish.

$$-7r-3=0$$

3 ni ikki tarafga qo’shing. Har qanday songa nolni qo‘shsangiz, o‘zi chiqadi.

$$-7r=3$$

Ikki tarafini -7 ga bo‘ling.

$$r=\frac{3}{-7}$$

\frac{3}{-7} kasri manfiy belgini olib tashlash bilan -\frac{3}{7} sifatida qayta yozilishi mumkin.

$$r=-\frac{3}{7}$$