(-2/5div6/7)-(4/3div1/8) eching

$$( \frac { - 2 } { 5 } \div \frac { 6 } { 7 } ) - ( \frac { 4 } { 3 } \div \frac { 1 } { 8 } )$$

Baholash

$$-\frac{167}{15}\approx -11,133333333$$

Yechim qadamlari

\frac{-2}{5} ni \frac{6}{7} ga bo'lish \frac{-2}{5} ga k'paytirish \frac{6}{7} ga qaytarish.

$$\frac{-2\times 7}{5\times 6}-\frac{\frac{4}{3}}{\frac{1}{8}}$$

Surat va maxrajdagi ikkala 2 ni qisqartiring.

$$\frac{-7}{3\times 5}-\frac{\frac{4}{3}}{\frac{1}{8}}$$

15 hosil qilish uchun 3 va 5 ni ko'paytirish.

$$\frac{-7}{15}-\frac{\frac{4}{3}}{\frac{1}{8}}$$

\frac{-7}{15} kasri manfiy belgini olib tashlash bilan -\frac{7}{15} sifatida qayta yozilishi mumkin.

$$-\frac{7}{15}-\frac{\frac{4}{3}}{\frac{1}{8}}$$

\frac{4}{3} ni \frac{1}{8} ga bo'lish \frac{4}{3} ga k'paytirish \frac{1}{8} ga qaytarish.

$$-\frac{7}{15}-\frac{4}{3}\times 8$$

\frac{4}{3}\times 8 ni yagona kasrga aylantiring.

$$-\frac{7}{15}-\frac{4\times 8}{3}$$

32 hosil qilish uchun 4 va 8 ni ko'paytirish.

$$-\frac{7}{15}-\frac{32}{3}$$

15 va 3 ning eng kichik umumiy karralisi 15 ga teng. -\frac{7}{15} va \frac{32}{3} ni 15 maxraj bilan kasrlarga aylantirib oling.

$$-\frac{7}{15}-\frac{160}{15}$$

-\frac{7}{15} va \frac{160}{15} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{-7-160}{15}$$

-167 olish uchun -7 dan 160 ni ayirish.

$$-\frac{167}{15}$$

Omil

$$-\frac{167}{15} = -11\frac{2}{15} = -11,133333333333333$$