(3/16-0.45)*0.8-0.21:0.2 eching

$$( \frac { 3 } { 16 } - 0.45 ) \cdot 0.8 - 0.21 : 0.2$$

Baholash

$$-1,26$$

Yechim qadamlari

0,45 o‘nlik raqamni uning \frac{45}{100} kasrga o‘giring. \frac{45}{100} ulushini 5 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\left(\frac{3}{16}-\frac{9}{20}\right)\times 0,8-\frac{0,21}{0,2}$$

16 va 20 ning eng kichik umumiy karralisi 80 ga teng. \frac{3}{16} va \frac{9}{20} ni 80 maxraj bilan kasrlarga aylantirib oling.

$$\left(\frac{15}{80}-\frac{36}{80}\right)\times 0,8-\frac{0,21}{0,2}$$

\frac{15}{80} va \frac{36}{80} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{15-36}{80}\times 0,8-\frac{0,21}{0,2}$$

-21 olish uchun 15 dan 36 ni ayirish.

$$-\frac{21}{80}\times 0,8-\frac{0,21}{0,2}$$

0,8 o‘nlik raqamni uning \frac{8}{10} kasrga o‘giring. \frac{8}{10} ulushini 2 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$-\frac{21}{80}\times \frac{4}{5}-\frac{0,21}{0,2}$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali -\frac{21}{80} ni \frac{4}{5} ga ko‘paytiring.

$$\frac{-21\times 4}{80\times 5}-\frac{0,21}{0,2}$$

\frac{-21\times 4}{80\times 5} kasridagi ko‘paytirishlarni bajaring.

$$\frac{-84}{400}-\frac{0,21}{0,2}$$

\frac{-84}{400} ulushini 4 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$-\frac{21}{100}-\frac{0,21}{0,2}$$

\frac{0,21}{0,2} kasrini uning surat va maxrajini 100 ga ko‘paytirish bilan kengaytiring.

$$-\frac{21}{100}-\frac{21}{20}$$

100 va 20 ning eng kichik umumiy karralisi 100 ga teng. -\frac{21}{100} va \frac{21}{20} ni 100 maxraj bilan kasrlarga aylantirib oling.

$$-\frac{21}{100}-\frac{105}{100}$$

-\frac{21}{100} va \frac{105}{100} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{-21-105}{100}$$

-126 olish uchun -21 dan 105 ni ayirish.

$$\frac{-126}{100}$$

\frac{-126}{100} ulushini 2 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$-\frac{63}{50}$$

Omil

$$-1,26$$