3/7+13/5*1/3 eching

$$\frac{ 3 }{ 7 } + \frac{ 13 }{ 5 } \times \frac{ 1 }{ 3 }$$

Baholash

$$\frac{136}{105}\approx 1,295238095$$

Yechim qadamlari

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{13}{5} ni \frac{1}{3} ga ko‘paytiring.

$$\frac{3}{7}+\frac{13\times 1}{5\times 3}$$

\frac{13\times 1}{5\times 3} kasridagi ko‘paytirishlarni bajaring.

$$\frac{3}{7}+\frac{13}{15}$$

7 va 15 ning eng kichik umumiy karralisi 105 ga teng. \frac{3}{7} va \frac{13}{15} ni 105 maxraj bilan kasrlarga aylantirib oling.

$$\frac{45}{105}+\frac{91}{105}$$

\frac{45}{105} va \frac{91}{105} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{45+91}{105}$$

136 olish uchun 45 va 91'ni qo'shing.

$$\frac{136}{105}$$

Omil

$$\frac{2 ^ {3} \cdot 17}{3 \cdot 5 \cdot 7} = 1\frac{31}{105} = 1,2952380952380953$$