1/2*3/5+13/2*2/5 eching

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

Baholash

$$\frac{13}{10}=1,3$$

Yechim qadamlari

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{1}{2} ni \frac{3}{5} ga ko‘paytiring.

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

\frac{1\times 3}{2\times 5} kasridagi ko‘paytirishlarni bajaring.

$$\frac{3}{10}+\frac{1\times 2+3}{2}\times \frac{2}{5}$$

2 hosil qilish uchun 1 va 2 ni ko'paytirish.

$$\frac{3}{10}+\frac{2+3}{2}\times \frac{2}{5}$$

5 olish uchun 2 va 3'ni qo'shing.

$$\frac{3}{10}+\frac{5}{2}\times \frac{2}{5}$$

\frac{5}{2} va uning teskari kasrini \frac{2}{5} ni qisqartiring.

$$\frac{3}{10}+1$$

1 ni \frac{10}{10} kasrga o‘giring.

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

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

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

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

$$\frac{13}{10}$$

Omil

$$\frac{13}{2 \cdot 5} = 1\frac{3}{10} = 1,3$$