8/10*2/10+3/10*0.72/10 eching

$$\frac { 8 } { 10 } \cdot \frac { 2 } { 10 } + \frac { 3 } { 10 } \cdot \frac { 0.72 } { 10 }$$

Baholash

$$0,1816$$

Yechim qadamlari

\frac{8}{10} ulushini 2 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{4}{5}\times \frac{2}{10}+\frac{3}{10}\times \frac{0,72}{10}$$

\frac{2}{10} ulushini 2 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{4}{5}\times \frac{1}{5}+\frac{3}{10}\times \frac{0,72}{10}$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{4}{5} ni \frac{1}{5} ga ko‘paytiring.

$$\frac{4\times 1}{5\times 5}+\frac{3}{10}\times \frac{0,72}{10}$$

\frac{4\times 1}{5\times 5} kasridagi ko‘paytirishlarni bajaring.

$$\frac{4}{25}+\frac{3}{10}\times \frac{0,72}{10}$$

\frac{0,72}{10} kasrini uning surat va maxrajini 100 ga ko‘paytirish bilan kengaytiring.

$$\frac{4}{25}+\frac{3}{10}\times \frac{72}{1000}$$

\frac{72}{1000} ulushini 8 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{4}{25}+\frac{3}{10}\times \frac{9}{125}$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{3}{10} ni \frac{9}{125} ga ko‘paytiring.

$$\frac{4}{25}+\frac{3\times 9}{10\times 125}$$

\frac{3\times 9}{10\times 125} kasridagi ko‘paytirishlarni bajaring.

$$\frac{4}{25}+\frac{27}{1250}$$

25 va 1250 ning eng kichik umumiy karralisi 1250 ga teng. \frac{4}{25} va \frac{27}{1250} ni 1250 maxraj bilan kasrlarga aylantirib oling.

$$\frac{200}{1250}+\frac{27}{1250}$$

\frac{200}{1250} va \frac{27}{1250} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{200+27}{1250}$$

227 olish uchun 200 va 27'ni qo'shing.

$$\frac{227}{1250}$$

Omil

$$\frac{227}{2 \cdot 5 ^ {4}} = 0,1816$$