12/3*39/10 eching

$$1 \frac { 2 } { 3 } \times 3 \frac { 9 } { 10 }$$

Baholash

$$\frac{13}{2}=6,5$$

Yechim qadamlari

3 hosil qilish uchun 1 va 3 ni ko'paytirish.

$$\frac{3+2}{3}\times \frac{3\times 10+9}{10}$$

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

$$\frac{5}{3}\times \frac{3\times 10+9}{10}$$

30 hosil qilish uchun 3 va 10 ni ko'paytirish.

$$\frac{5}{3}\times \frac{30+9}{10}$$

39 olish uchun 30 va 9'ni qo'shing.

$$\frac{5}{3}\times \frac{39}{10}$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{5}{3} ni \frac{39}{10} ga ko‘paytiring.

$$\frac{5\times 39}{3\times 10}$$

\frac{5\times 39}{3\times 10} kasridagi ko‘paytirishlarni bajaring.

$$\frac{195}{30}$$

\frac{195}{30} ulushini 15 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{13}{2}$$

Omil

$$\frac{13}{2} = 6\frac{1}{2} = 6,5$$