{frac{2/3}+1/5}{30} eching

$$\frac { { \frac { 2 } { 3 } } + \frac { 1 } { 5 } } { 30 }$$

Baholash

$$\frac{13}{450}\approx 0,028888889$$

Yechim qadamlari

3 va 5 ning eng kichik umumiy karralisi 15 ga teng. \frac{2}{3} va \frac{1}{5} ni 15 maxraj bilan kasrlarga aylantirib oling.

$$\frac{\frac{10}{15}+\frac{3}{15}}{30}$$

\frac{10}{15} va \frac{3}{15} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{\frac{10+3}{15}}{30}$$

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

$$\frac{\frac{13}{15}}{30}$$

\frac{\frac{13}{15}}{30} ni yagona kasrga aylantiring.

$$\frac{13}{15\times 30}$$

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

$$\frac{13}{450}$$

Omil

$$\frac{13}{2 \cdot 3 ^ {2} \cdot 5 ^ {2}} = 0,028888888888888888$$