81/88*(6-113/15*119/21) eching

$$\frac { 81 } { 88 } \cdot ( 6 - 1 \frac { 13 } { 15 } \cdot 1 \frac { 19 } { 21 } )$$

Baholash

$$\frac{9}{4}=2,25$$

Yechim qadamlari

15 hosil qilish uchun 1 va 15 ni ko'paytirish.

$$\frac{81}{88}\left(6-\frac{15+13}{15}\times \frac{1\times 21+19}{21}\right)$$

28 olish uchun 15 va 13'ni qo'shing.

$$\frac{81}{88}\left(6-\frac{28}{15}\times \frac{1\times 21+19}{21}\right)$$

21 hosil qilish uchun 1 va 21 ni ko'paytirish.

$$\frac{81}{88}\left(6-\frac{28}{15}\times \frac{21+19}{21}\right)$$

40 olish uchun 21 va 19'ni qo'shing.

$$\frac{81}{88}\left(6-\frac{28}{15}\times \frac{40}{21}\right)$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{28}{15} ni \frac{40}{21} ga ko‘paytiring.

$$\frac{81}{88}\left(6-\frac{28\times 40}{15\times 21}\right)$$

\frac{28\times 40}{15\times 21} kasridagi ko‘paytirishlarni bajaring.

$$\frac{81}{88}\left(6-\frac{1120}{315}\right)$$

\frac{1120}{315} ulushini 35 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{81}{88}\left(6-\frac{32}{9}\right)$$

6 ni \frac{54}{9} kasrga o‘giring.

$$\frac{81}{88}\left(\frac{54}{9}-\frac{32}{9}\right)$$

\frac{54}{9} va \frac{32}{9} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{81}{88}\times \frac{54-32}{9}$$

22 olish uchun 54 dan 32 ni ayirish.

$$\frac{81}{88}\times \frac{22}{9}$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{81}{88} ni \frac{22}{9} ga ko‘paytiring.

$$\frac{81\times 22}{88\times 9}$$

\frac{81\times 22}{88\times 9} kasridagi ko‘paytirishlarni bajaring.

$$\frac{1782}{792}$$

\frac{1782}{792} ulushini 198 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{9}{4}$$

Omil

$$\frac{3 ^ {2}}{2 ^ {2}} = 2\frac{1}{4} = 2,25$$