((2/5)(2/3))+(1/2div2) eching

$$(( \frac{ 2 }{ 5 } )( \frac{ 2 }{ 3 } ))+( \frac{ 1 }{ 2 } \div 2)$$

Baholash

$$\frac{31}{60}\approx 0,516666667$$

Yechim qadamlari

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{2}{5} ni \frac{2}{3} ga ko‘paytiring.

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

\frac{2\times 2}{5\times 3} kasridagi ko‘paytirishlarni bajaring.

$$\frac{4}{15}+\frac{\frac{1}{2}}{2}$$

\frac{\frac{1}{2}}{2} ni yagona kasrga aylantiring.

$$\frac{4}{15}+\frac{1}{2\times 2}$$

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

$$\frac{4}{15}+\frac{1}{4}$$

15 va 4 ning eng kichik umumiy karralisi 60 ga teng. \frac{4}{15} va \frac{1}{4} ni 60 maxraj bilan kasrlarga aylantirib oling.

$$\frac{16}{60}+\frac{15}{60}$$

\frac{16}{60} va \frac{15}{60} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{16+15}{60}$$

31 olish uchun 16 va 15'ni qo'shing.

$$\frac{31}{60}$$

Omil

$$\frac{31}{2 ^ {2} \cdot 3 \cdot 5} = 0,5166666666666667$$