(1-10%)(1+2%) eching

$$( 1 - 10 \% ) ( 1 + 2 \% )$$

Baholash

$$\frac{459}{500}=0,918$$

Yechim qadamlari

\frac{10}{100} ulushini 10 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\left(1-\frac{1}{10}\right)\left(1+\frac{2}{100}\right)$$

1 ni \frac{10}{10} kasrga o‘giring.

$$\left(\frac{10}{10}-\frac{1}{10}\right)\left(1+\frac{2}{100}\right)$$

\frac{10}{10} va \frac{1}{10} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{10-1}{10}\left(1+\frac{2}{100}\right)$$

9 olish uchun 10 dan 1 ni ayirish.

$$\frac{9}{10}\left(1+\frac{2}{100}\right)$$

\frac{2}{100} ulushini 2 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{9}{10}\left(1+\frac{1}{50}\right)$$

1 ni \frac{50}{50} kasrga o‘giring.

$$\frac{9}{10}\left(\frac{50}{50}+\frac{1}{50}\right)$$

\frac{50}{50} va \frac{1}{50} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{9}{10}\times \frac{50+1}{50}$$

51 olish uchun 50 va 1'ni qo'shing.

$$\frac{9}{10}\times \frac{51}{50}$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{9}{10} ni \frac{51}{50} ga ko‘paytiring.

$$\frac{9\times 51}{10\times 50}$$

\frac{9\times 51}{10\times 50} kasridagi ko‘paytirishlarni bajaring.

$$\frac{459}{500}$$

Omil

$$\frac{3 ^ {3} \cdot 17}{2 ^ {2} \cdot 5 ^ {3}} = 0,918$$