1-(9div12)*(8div11)*(7div10) eching

$$1-(9 \div 12) \times (8 \div 11) \times (7 \div 10)$$

Baholash

$$\frac{34}{55}\approx 0,618181818$$

Yechim qadamlari

\frac{9}{12} ulushini 3 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$1-\frac{3}{4}\times \frac{8}{11}\times \frac{7}{10}$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{3}{4} ni \frac{8}{11} ga ko‘paytiring.

$$1-\frac{3\times 8}{4\times 11}\times \frac{7}{10}$$

\frac{3\times 8}{4\times 11} kasridagi ko‘paytirishlarni bajaring.

$$1-\frac{24}{44}\times \frac{7}{10}$$

\frac{24}{44} ulushini 4 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$1-\frac{6}{11}\times \frac{7}{10}$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{6}{11} ni \frac{7}{10} ga ko‘paytiring.

$$1-\frac{6\times 7}{11\times 10}$$

\frac{6\times 7}{11\times 10} kasridagi ko‘paytirishlarni bajaring.

$$1-\frac{42}{110}$$

\frac{42}{110} ulushini 2 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$1-\frac{21}{55}$$

1 ni \frac{55}{55} kasrga o‘giring.

$$\frac{55}{55}-\frac{21}{55}$$

\frac{55}{55} va \frac{21}{55} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{55-21}{55}$$

34 olish uchun 55 dan 21 ni ayirish.

$$\frac{34}{55}$$

Omil

$$\frac{2 \cdot 17}{5 \cdot 11} = 0,6181818181818182$$