5-left(7-2-left(1-9right)-3+12right)+4 eching

$$5- \left( 7-2- \left( 1-9 \right) -3+12 \right) +4$$

Baholash

$$-13$$

Yechim qadamlari

5 olish uchun 7 dan 2 ni ayirish.

$$5-\left(5-\left(1-9\right)-3+12\right)+4$$

-8 olish uchun 1 dan 9 ni ayirish.

$$5-\left(5-\left(-8\right)-3+12\right)+4$$

-8 ning teskarisi 8 ga teng.

$$5-\left(5+8-3+12\right)+4$$

13 olish uchun 5 va 8'ni qo'shing.

$$5-\left(13-3+12\right)+4$$

10 olish uchun 13 dan 3 ni ayirish.

$$5-\left(10+12\right)+4$$

22 olish uchun 10 va 12'ni qo'shing.

$$5-22+4$$

-17 olish uchun 5 dan 22 ni ayirish.

$$-17+4$$

-13 olish uchun -17 va 4'ni qo'shing.

$$-13$$

Omil

$$-13$$