2(-2/5)div(-3/10)^-1 eching

$$2 ( \frac { - 2 } { 5 } ) \div ( \frac { - 3 } { 10 } ) ^ { - 1 }$$

Baholash

$$\frac{6}{25}=0,24$$

Yechim qadamlari

\frac{-2}{5} kasri manfiy belgini olib tashlash bilan -\frac{2}{5} sifatida qayta yozilishi mumkin.

$$\frac{2\left(-\frac{2}{5}\right)}{\left(\frac{-3}{10}\right)^{-1}}$$

-\frac{4}{5} hosil qilish uchun 2 va -\frac{2}{5} ni ko'paytirish.

$$\frac{-\frac{4}{5}}{\left(\frac{-3}{10}\right)^{-1}}$$

\frac{-3}{10} kasri manfiy belgini olib tashlash bilan -\frac{3}{10} sifatida qayta yozilishi mumkin.

$$\frac{-\frac{4}{5}}{\left(-\frac{3}{10}\right)^{-1}}$$

-1 daraja ko‘rsatkichini -\frac{3}{10} ga hisoblang va -\frac{10}{3} ni qiymatni oling.

$$\frac{-\frac{4}{5}}{-\frac{10}{3}}$$

-\frac{4}{5} ni -\frac{10}{3} ga bo'lish -\frac{4}{5} ga k'paytirish -\frac{10}{3} ga qaytarish.

$$-\frac{4}{5}\left(-\frac{3}{10}\right)$$

\frac{6}{25} hosil qilish uchun -\frac{4}{5} va -\frac{3}{10} ni ko'paytirish.

$$\frac{6}{25}$$

Omil

$$\frac{2 \cdot 3}{5 ^ {2}} = 0,24$$