23/5*55/5+73/2:2 eching

$$2 \frac { 3 } { 5 } \times 5 \frac { 5 } { 5 } + 7 \frac { 3 } { 2 } : 2$$

Baholash

$$\frac{397}{20}=19,85$$

Yechim qadamlari

10 hosil qilish uchun 2 va 5 ni ko'paytirish.

$$\frac{10+3}{5}\times \frac{5\times 5+5}{5}+\frac{\frac{7\times 2+3}{2}}{2}$$

13 olish uchun 10 va 3'ni qo'shing.

$$\frac{13}{5}\times \frac{5\times 5+5}{5}+\frac{\frac{7\times 2+3}{2}}{2}$$

25 hosil qilish uchun 5 va 5 ni ko'paytirish.

$$\frac{13}{5}\times \frac{25+5}{5}+\frac{\frac{7\times 2+3}{2}}{2}$$

30 olish uchun 25 va 5'ni qo'shing.

$$\frac{13}{5}\times \frac{30}{5}+\frac{\frac{7\times 2+3}{2}}{2}$$

6 ni olish uchun 30 ni 5 ga bo‘ling.

$$\frac{13}{5}\times 6+\frac{\frac{7\times 2+3}{2}}{2}$$

\frac{13}{5}\times 6 ni yagona kasrga aylantiring.

$$\frac{13\times 6}{5}+\frac{\frac{7\times 2+3}{2}}{2}$$

78 hosil qilish uchun 13 va 6 ni ko'paytirish.

$$\frac{78}{5}+\frac{\frac{7\times 2+3}{2}}{2}$$

\frac{\frac{7\times 2+3}{2}}{2} ni yagona kasrga aylantiring.

$$\frac{78}{5}+\frac{7\times 2+3}{2\times 2}$$

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

$$\frac{78}{5}+\frac{14+3}{2\times 2}$$

17 olish uchun 14 va 3'ni qo'shing.

$$\frac{78}{5}+\frac{17}{2\times 2}$$

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

$$\frac{78}{5}+\frac{17}{4}$$

5 va 4 ning eng kichik umumiy karralisi 20 ga teng. \frac{78}{5} va \frac{17}{4} ni 20 maxraj bilan kasrlarga aylantirib oling.

$$\frac{312}{20}+\frac{85}{20}$$

\frac{312}{20} va \frac{85}{20} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{312+85}{20}$$

397 olish uchun 312 va 85'ni qo'shing.

$$\frac{397}{20}$$

Omil

$$\frac{397}{2 ^ {2} \cdot 5} = 19\frac{17}{20} = 19,85$$