(0.25*79-3.21*21/11) eching

$$( 0.25 \cdot 79 - 3.21 \cdot 2 \frac { 1 } { 11 } )$$

Baholash

$$\frac{7171}{550}\approx 13,038181818$$

Yechim qadamlari

19,75 hosil qilish uchun 0,25 va 79 ni ko'paytirish.

$$19,75-3,21\times \frac{2\times 11+1}{11}$$

22 hosil qilish uchun 2 va 11 ni ko'paytirish.

$$19,75-3,21\times \frac{22+1}{11}$$

23 olish uchun 22 va 1'ni qo'shing.

$$19,75-3,21\times \frac{23}{11}$$

3,21 o‘nlik raqamni uning \frac{321}{100} kasrga o‘giring.

$$19,75-\frac{321}{100}\times \frac{23}{11}$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{321}{100} ni \frac{23}{11} ga ko‘paytiring.

$$19,75-\frac{321\times 23}{100\times 11}$$

\frac{321\times 23}{100\times 11} kasridagi ko‘paytirishlarni bajaring.

$$19,75-\frac{7383}{1100}$$

19,75 o‘nlik raqamni uning \frac{1975}{100} kasrga o‘giring. \frac{1975}{100} ulushini 25 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{79}{4}-\frac{7383}{1100}$$

4 va 1100 ning eng kichik umumiy karralisi 1100 ga teng. \frac{79}{4} va \frac{7383}{1100} ni 1100 maxraj bilan kasrlarga aylantirib oling.

$$\frac{21725}{1100}-\frac{7383}{1100}$$

\frac{21725}{1100} va \frac{7383}{1100} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{21725-7383}{1100}$$

14342 olish uchun 21725 dan 7383 ni ayirish.

$$\frac{14342}{1100}$$

\frac{14342}{1100} ulushini 2 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{7171}{550}$$

Omil

$$\frac{71 \cdot 101}{2 \cdot 11 \cdot 5 ^ {2}} = 13\frac{21}{550} = 13,038181818181819$$