5*3-7div9*2+3div8*6-2= eching

$$5 \times 3-7 \div 9 \times 2+3 \div 8 \times 6-2=$$

Baholash

$$\frac{493}{36}\approx 13,694444444$$

Yechim qadamlari

15 hosil qilish uchun 5 va 3 ni ko'paytirish.

$$15-\frac{7}{9}\times 2+\frac{3}{8}\times 6-2$$

\frac{7}{9}\times 2 ni yagona kasrga aylantiring.

$$15-\frac{7\times 2}{9}+\frac{3}{8}\times 6-2$$

14 hosil qilish uchun 7 va 2 ni ko'paytirish.

$$15-\frac{14}{9}+\frac{3}{8}\times 6-2$$

15 ni \frac{135}{9} kasrga o‘giring.

$$\frac{135}{9}-\frac{14}{9}+\frac{3}{8}\times 6-2$$

\frac{135}{9} va \frac{14}{9} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{135-14}{9}+\frac{3}{8}\times 6-2$$

121 olish uchun 135 dan 14 ni ayirish.

$$\frac{121}{9}+\frac{3}{8}\times 6-2$$

\frac{3}{8}\times 6 ni yagona kasrga aylantiring.

$$\frac{121}{9}+\frac{3\times 6}{8}-2$$

18 hosil qilish uchun 3 va 6 ni ko'paytirish.

$$\frac{121}{9}+\frac{18}{8}-2$$

\frac{18}{8} ulushini 2 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{121}{9}+\frac{9}{4}-2$$

9 va 4 ning eng kichik umumiy karralisi 36 ga teng. \frac{121}{9} va \frac{9}{4} ni 36 maxraj bilan kasrlarga aylantirib oling.

$$\frac{484}{36}+\frac{81}{36}-2$$

\frac{484}{36} va \frac{81}{36} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{484+81}{36}-2$$

565 olish uchun 484 va 81'ni qo'shing.

$$\frac{565}{36}-2$$

2 ni \frac{72}{36} kasrga o‘giring.

$$\frac{565}{36}-\frac{72}{36}$$

\frac{565}{36} va \frac{72}{36} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{565-72}{36}$$

493 olish uchun 565 dan 72 ni ayirish.

$$\frac{493}{36}$$

Omil

$$\frac{17 \cdot 29}{2 ^ {2} \cdot 3 ^ {2}} = 13\frac{25}{36} = 13,694444444444445$$