4+8[-3+2(5-9)+7]-2= eching

$$4 + 8 [ - 3 + 2 ( 5 - 9 ) + 7 ] - 2 =$$

Baholash

$$-30$$

Yechim qadamlari

-4 olish uchun 5 dan 9 ni ayirish.

$$4+8\left(-3+2\left(-4\right)+7\right)-2$$

-8 hosil qilish uchun 2 va -4 ni ko'paytirish.

$$4+8\left(-3-8+7\right)-2$$

-11 olish uchun -3 dan 8 ni ayirish.

$$4+8\left(-11+7\right)-2$$

-4 olish uchun -11 va 7'ni qo'shing.

$$4+8\left(-4\right)-2$$

-32 hosil qilish uchun 8 va -4 ni ko'paytirish.

$$4-32-2$$

-28 olish uchun 4 dan 32 ni ayirish.

$$-28-2$$

-30 olish uchun -28 dan 2 ni ayirish.

$$-30$$

Omil

$$-30$$