(-3)/+1+(-7)/(-1)-(+12)/(-3)= eching

$$\frac { ( - 3 ) } { + 1 } + \frac { ( - 7 ) } { ( - 1 ) } - \frac { ( + 12 ) } { ( - 3 ) } =$$

Baholash

$$8$$

Yechim qadamlari

Har qanday son birga bo‘linganda, natija o‘zi chiqadi.

$$-3+\frac{-7}{-1}-\frac{12}{-3}$$

Ikkala surat va maxrajdan manfiy belgini olib tashlash bilan \frac{-7}{-1} kasrini 7 ga soddalashtirish mumkin.

$$-3+7-\frac{12}{-3}$$

4 olish uchun -3 va 7'ni qo'shing.

$$4-\frac{12}{-3}$$

-4 ni olish uchun 12 ni -3 ga bo‘ling.

$$4-\left(-4\right)$$

-4 ning teskarisi 4 ga teng.

$$4+4$$

8 olish uchun 4 va 4'ni qo'shing.

$$8$$

Omil

$$2^{3}$$