4/7*4/3div(2/5-4/15) eching

$$\frac { 4 } { 7 } \times \frac { 4 } { 3 } \div ( \frac { 2 } { 5 } - \frac { 4 } { 15 } )$$

Baholash

$$\frac{40}{7}\approx 5,714285714$$

Yechim qadamlari

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{4}{7} ni \frac{4}{3} ga ko‘paytiring.

$$\frac{\frac{4\times 4}{7\times 3}}{\frac{2}{5}-\frac{4}{15}}$$

\frac{4\times 4}{7\times 3} kasridagi ko‘paytirishlarni bajaring.

$$\frac{\frac{16}{21}}{\frac{2}{5}-\frac{4}{15}}$$

5 va 15 ning eng kichik umumiy karralisi 15 ga teng. \frac{2}{5} va \frac{4}{15} ni 15 maxraj bilan kasrlarga aylantirib oling.

$$\frac{\frac{16}{21}}{\frac{6}{15}-\frac{4}{15}}$$

\frac{6}{15} va \frac{4}{15} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{\frac{16}{21}}{\frac{6-4}{15}}$$

2 olish uchun 6 dan 4 ni ayirish.

$$\frac{\frac{16}{21}}{\frac{2}{15}}$$

\frac{16}{21} ni \frac{2}{15} ga bo'lish \frac{16}{21} ga k'paytirish \frac{2}{15} ga qaytarish.

$$\frac{16}{21}\times \frac{15}{2}$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{16}{21} ni \frac{15}{2} ga ko‘paytiring.

$$\frac{16\times 15}{21\times 2}$$

\frac{16\times 15}{21\times 2} kasridagi ko‘paytirishlarni bajaring.

$$\frac{240}{42}$$

\frac{240}{42} ulushini 6 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{40}{7}$$

Omil

$$\frac{2 ^ {3} \cdot 5}{7} = 5\frac{5}{7} = 5,714285714285714$$