2/7+7/8+9 eching

$$\frac { 2 } { 7 } + \frac { 7 } { 8 } + 9$$

Baholash

$$\frac{569}{56}\approx 10,160714286$$

Yechim qadamlari

7 va 8 ning eng kichik umumiy karralisi 56 ga teng. \frac{2}{7} va \frac{7}{8} ni 56 maxraj bilan kasrlarga aylantirib oling.

$$\frac{16}{56}+\frac{49}{56}+9$$

\frac{16}{56} va \frac{49}{56} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{16+49}{56}+9$$

65 olish uchun 16 va 49'ni qo'shing.

$$\frac{65}{56}+9$$

9 ni \frac{504}{56} kasrga o‘giring.

$$\frac{65}{56}+\frac{504}{56}$$

\frac{65}{56} va \frac{504}{56} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{65+504}{56}$$

569 olish uchun 65 va 504'ni qo'shing.

$$\frac{569}{56}$$

Omil

$$\frac{569}{2 ^ {3} \cdot 7} = 10\frac{9}{56} = 10,160714285714286$$