-7(-3d-2/7)=72 eching

$$- 7 ( - 3 d - \frac { 2 } { 7 } ) = 72$$

d uchun yechish

$$d = \frac{10}{3} = 3\frac{1}{3} \approx 3,333333333$$

Chiziqli tenglamalarni yechish bo'yicha qadamlar

Ikki tarafini -7 ga bo‘ling.

$$-3d-\frac{2}{7}=-\frac{72}{7}$$

\frac{2}{7} ni ikki tarafga qo’shing.

$$-3d=-\frac{72}{7}+\frac{2}{7}$$

-\frac{72}{7} va \frac{2}{7} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$-3d=\frac{-72+2}{7}$$

-70 olish uchun -72 va 2'ni qo'shing.

$$-3d=\frac{-70}{7}$$

-10 ni olish uchun -70 ni 7 ga bo‘ling.

$$-3d=-10$$

Ikki tarafini -3 ga bo‘ling.

$$d=\frac{-10}{-3}$$

Ikkala surat va maxrajdan manfiy belgini olib tashlash bilan \frac{-10}{-3} kasrini \frac{10}{3} ga soddalashtirish mumkin.

$$d=\frac{10}{3}$$