2+5-6div8*7 eching

$$2 + 5 - 6 \div 8 \times 7$$

Baholash

$$\frac{7}{4}=1,75$$

Yechim qadamlari

7 olish uchun 2 va 5'ni qo'shing.

$$7-\frac{6}{8}\times 7$$

\frac{6}{8} ulushini 2 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$7-\frac{3}{4}\times 7$$

\frac{3}{4}\times 7 ni yagona kasrga aylantiring.

$$7-\frac{3\times 7}{4}$$

21 hosil qilish uchun 3 va 7 ni ko'paytirish.

$$7-\frac{21}{4}$$

7 ni \frac{28}{4} kasrga o‘giring.

$$\frac{28}{4}-\frac{21}{4}$$

\frac{28}{4} va \frac{21}{4} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{28-21}{4}$$

7 olish uchun 28 dan 21 ni ayirish.

$$\frac{7}{4}$$

Omil

$$\frac{7}{2 ^ {2}} = 1\frac{3}{4} = 1,75$$