2/5*3/10*21/2*4 eching

$$\frac { 2 } { 5 } \times \frac { 3 } { 10 } \times 2 \frac { 1 } { 2 } \times 4$$

Baholash

$$\frac{6}{5}=1,2$$

Yechim qadamlari

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{2}{5} ni \frac{3}{10} ga ko‘paytiring.

$$\frac{2\times 3}{5\times 10}\times \frac{2\times 2+1}{2}\times 4$$

\frac{2\times 3}{5\times 10} kasridagi ko‘paytirishlarni bajaring.

$$\frac{6}{50}\times \frac{2\times 2+1}{2}\times 4$$

\frac{6}{50} ulushini 2 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{3}{25}\times \frac{2\times 2+1}{2}\times 4$$

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

$$\frac{3}{25}\times \frac{4+1}{2}\times 4$$

5 olish uchun 4 va 1'ni qo'shing.

$$\frac{3}{25}\times \frac{5}{2}\times 4$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{3}{25} ni \frac{5}{2} ga ko‘paytiring.

$$\frac{3\times 5}{25\times 2}\times 4$$

\frac{3\times 5}{25\times 2} kasridagi ko‘paytirishlarni bajaring.

$$\frac{15}{50}\times 4$$

\frac{15}{50} ulushini 5 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{3}{10}\times 4$$

\frac{3}{10}\times 4 ni yagona kasrga aylantiring.

$$\frac{3\times 4}{10}$$

12 hosil qilish uchun 3 va 4 ni ko'paytirish.

$$\frac{12}{10}$$

\frac{12}{10} ulushini 2 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{6}{5}$$

Omil

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