2*(3/8)^2-3/2*3/8+7/10 eching

$$2 \times ( \frac { 3 } { 8 } ) ^ { 2 } - \frac { 3 } { 2 } \times \frac { 3 } { 8 } + \frac { 7 } { 10 }$$

Baholash

$$\frac{67}{160}=0,41875$$

Yechim qadamlari

2 daraja ko‘rsatkichini \frac{3}{8} ga hisoblang va \frac{9}{64} ni qiymatni oling.

$$2\times \frac{9}{64}-\frac{3}{2}\times \frac{3}{8}+\frac{7}{10}$$

2\times \frac{9}{64} ni yagona kasrga aylantiring.

$$\frac{2\times 9}{64}-\frac{3}{2}\times \frac{3}{8}+\frac{7}{10}$$

18 hosil qilish uchun 2 va 9 ni ko'paytirish.

$$\frac{18}{64}-\frac{3}{2}\times \frac{3}{8}+\frac{7}{10}$$

\frac{18}{64} ulushini 2 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{9}{32}-\frac{3}{2}\times \frac{3}{8}+\frac{7}{10}$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{3}{2} ni \frac{3}{8} ga ko‘paytiring.

$$\frac{9}{32}-\frac{3\times 3}{2\times 8}+\frac{7}{10}$$

\frac{3\times 3}{2\times 8} kasridagi ko‘paytirishlarni bajaring.

$$\frac{9}{32}-\frac{9}{16}+\frac{7}{10}$$

32 va 16 ning eng kichik umumiy karralisi 32 ga teng. \frac{9}{32} va \frac{9}{16} ni 32 maxraj bilan kasrlarga aylantirib oling.

$$\frac{9}{32}-\frac{18}{32}+\frac{7}{10}$$

\frac{9}{32} va \frac{18}{32} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{9-18}{32}+\frac{7}{10}$$

-9 olish uchun 9 dan 18 ni ayirish.

$$-\frac{9}{32}+\frac{7}{10}$$

32 va 10 ning eng kichik umumiy karralisi 160 ga teng. -\frac{9}{32} va \frac{7}{10} ni 160 maxraj bilan kasrlarga aylantirib oling.

$$-\frac{45}{160}+\frac{112}{160}$$

-\frac{45}{160} va \frac{112}{160} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{-45+112}{160}$$

67 olish uchun -45 va 112'ni qo'shing.

$$\frac{67}{160}$$

Omil

$$\frac{67}{2 ^ {5} \cdot 5} = 0,41875$$