99*5-[20:(13-3*3)+1]-4:8}:6+(15-12+6 eching

$$99 \cdot 5 - [ 20 : ( 13 - 3 \cdot 3 ) + 1 ] - 4 : 8 \} : 6 + ( 15 - 12 + 6$$

Baholash

$$\frac{977}{2}=488,5$$

Yechim qadamlari

495 hosil qilish uchun 99 va 5 ni ko'paytirish.

$$495-\left(\frac{20}{13-3\times 3}+1\right)-\frac{4}{8}$$

9 hosil qilish uchun 3 va 3 ni ko'paytirish.

$$495-\left(\frac{20}{13-9}+1\right)-\frac{4}{8}$$

4 olish uchun 13 dan 9 ni ayirish.

$$495-\left(\frac{20}{4}+1\right)-\frac{4}{8}$$

5 ni olish uchun 20 ni 4 ga bo‘ling.

$$495-\left(5+1\right)-\frac{4}{8}$$

6 olish uchun 5 va 1'ni qo'shing.

$$495-6-\frac{4}{8}$$

489 olish uchun 495 dan 6 ni ayirish.

$$489-\frac{4}{8}$$

\frac{4}{8} ulushini 4 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$489-\frac{1}{2}$$

489 ni \frac{978}{2} kasrga o‘giring.

$$\frac{978}{2}-\frac{1}{2}$$

\frac{978}{2} va \frac{1}{2} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{978-1}{2}$$

977 olish uchun 978 dan 1 ni ayirish.

$$\frac{977}{2}$$

Omil

$$\frac{977}{2} = 488\frac{1}{2} = 488,5$$