25div50*11/2*21/5 eching

$$25 \div 50 \times 1 \frac { 1 } { 2 } \times 2 \frac { 1 } { 5 }$$

Baholash

$$\frac{33}{20}=1,65$$

Yechim qadamlari

\frac{25}{50} ulushini 25 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

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

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

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

3 olish uchun 2 va 1'ni qo'shing.

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

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

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

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

$$\frac{3}{4}\times \frac{2\times 5+1}{5}$$

10 hosil qilish uchun 2 va 5 ni ko'paytirish.

$$\frac{3}{4}\times \frac{10+1}{5}$$

11 olish uchun 10 va 1'ni qo'shing.

$$\frac{3}{4}\times \frac{11}{5}$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{3}{4} ni \frac{11}{5} ga ko‘paytiring.

$$\frac{3\times 11}{4\times 5}$$

\frac{3\times 11}{4\times 5} kasridagi ko‘paytirishlarni bajaring.

$$\frac{33}{20}$$

Omil

$$\frac{3 \cdot 11}{2 ^ {2} \cdot 5} = 1\frac{13}{20} = 1,65$$