92/3-71/2+28/15 eching

$$9 \frac { 2 } { 3 } - 7 \frac { 1 } { 2 } + 2 \frac { 8 } { 15 }$$

Baholash

$$\frac{47}{10}=4,7$$

Yechim qadamlari

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

$$\frac{27+2}{3}-\frac{7\times 2+1}{2}+\frac{2\times 15+8}{15}$$

29 olish uchun 27 va 2'ni qo'shing.

$$\frac{29}{3}-\frac{7\times 2+1}{2}+\frac{2\times 15+8}{15}$$

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

$$\frac{29}{3}-\frac{14+1}{2}+\frac{2\times 15+8}{15}$$

15 olish uchun 14 va 1'ni qo'shing.

$$\frac{29}{3}-\frac{15}{2}+\frac{2\times 15+8}{15}$$

3 va 2 ning eng kichik umumiy karralisi 6 ga teng. \frac{29}{3} va \frac{15}{2} ni 6 maxraj bilan kasrlarga aylantirib oling.

$$\frac{58}{6}-\frac{45}{6}+\frac{2\times 15+8}{15}$$

\frac{58}{6} va \frac{45}{6} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{58-45}{6}+\frac{2\times 15+8}{15}$$

13 olish uchun 58 dan 45 ni ayirish.

$$\frac{13}{6}+\frac{2\times 15+8}{15}$$

30 hosil qilish uchun 2 va 15 ni ko'paytirish.

$$\frac{13}{6}+\frac{30+8}{15}$$

38 olish uchun 30 va 8'ni qo'shing.

$$\frac{13}{6}+\frac{38}{15}$$

6 va 15 ning eng kichik umumiy karralisi 30 ga teng. \frac{13}{6} va \frac{38}{15} ni 30 maxraj bilan kasrlarga aylantirib oling.

$$\frac{65}{30}+\frac{76}{30}$$

\frac{65}{30} va \frac{76}{30} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{65+76}{30}$$

141 olish uchun 65 va 76'ni qo'shing.

$$\frac{141}{30}$$

\frac{141}{30} ulushini 3 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{47}{10}$$

Omil

$$\frac{47}{2 \cdot 5} = 4\frac{7}{10} = 4,7$$