121/3*102/4 eching

$$12 \frac { 1 } { 3 } \times 10 \frac { 2 } { 4 }$$

Baholash

$$\frac{259}{2}=129,5$$

Yechim qadamlari

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

$$\frac{36+1}{3}\times \frac{10\times 4+2}{4}$$

37 olish uchun 36 va 1'ni qo'shing.

$$\frac{37}{3}\times \frac{10\times 4+2}{4}$$

40 hosil qilish uchun 10 va 4 ni ko'paytirish.

$$\frac{37}{3}\times \frac{40+2}{4}$$

42 olish uchun 40 va 2'ni qo'shing.

$$\frac{37}{3}\times \frac{42}{4}$$

\frac{42}{4} ulushini 2 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{37}{3}\times \frac{21}{2}$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{37}{3} ni \frac{21}{2} ga ko‘paytiring.

$$\frac{37\times 21}{3\times 2}$$

\frac{37\times 21}{3\times 2} kasridagi ko‘paytirishlarni bajaring.

$$\frac{777}{6}$$

\frac{777}{6} ulushini 3 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{259}{2}$$

Omil

$$\frac{7 \cdot 37}{2} = 129\frac{1}{2} = 129,5$$