4/5+7/8+59/14= eching

$$\frac{ 4 }{ 5 } + \frac{ 7 }{ 8 } + 5 \frac { 9 } { 14 } =$$

Baholash

$$\frac{2049}{280}\approx 7,317857143$$

Yechim qadamlari

5 va 8 ning eng kichik umumiy karralisi 40 ga teng. \frac{4}{5} va \frac{7}{8} ni 40 maxraj bilan kasrlarga aylantirib oling.

$$\frac{32}{40}+\frac{35}{40}+\frac{5\times 14+9}{14}$$

\frac{32}{40} va \frac{35}{40} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{32+35}{40}+\frac{5\times 14+9}{14}$$

67 olish uchun 32 va 35'ni qo'shing.

$$\frac{67}{40}+\frac{5\times 14+9}{14}$$

70 hosil qilish uchun 5 va 14 ni ko'paytirish.

$$\frac{67}{40}+\frac{70+9}{14}$$

79 olish uchun 70 va 9'ni qo'shing.

$$\frac{67}{40}+\frac{79}{14}$$

40 va 14 ning eng kichik umumiy karralisi 280 ga teng. \frac{67}{40} va \frac{79}{14} ni 280 maxraj bilan kasrlarga aylantirib oling.

$$\frac{469}{280}+\frac{1580}{280}$$

\frac{469}{280} va \frac{1580}{280} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{469+1580}{280}$$

2049 olish uchun 469 va 1580'ni qo'shing.

$$\frac{2049}{280}$$

Omil

$$\frac{3 \cdot 683}{2 ^ {3} \cdot 5 \cdot 7} = 7\frac{89}{280} = 7,317857142857143$$