(2/3)^-2*(2/5)^-1div12/3 eching

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

Baholash

$$\frac{27}{8}=3,375$$

Yechim qadamlari

-2 daraja ko‘rsatkichini \frac{2}{3} ga hisoblang va \frac{9}{4} ni qiymatni oling.

$$\frac{\frac{9}{4}\times \left(\frac{2}{5}\right)^{-1}}{\frac{1\times 3+2}{3}}$$

-1 daraja ko‘rsatkichini \frac{2}{5} ga hisoblang va \frac{5}{2} ni qiymatni oling.

$$\frac{\frac{9}{4}\times \frac{5}{2}}{\frac{1\times 3+2}{3}}$$

\frac{45}{8} hosil qilish uchun \frac{9}{4} va \frac{5}{2} ni ko'paytirish.

$$\frac{\frac{45}{8}}{\frac{1\times 3+2}{3}}$$

3 hosil qilish uchun 1 va 3 ni ko'paytirish.

$$\frac{\frac{45}{8}}{\frac{3+2}{3}}$$

5 olish uchun 3 va 2'ni qo'shing.

$$\frac{\frac{45}{8}}{\frac{5}{3}}$$

\frac{45}{8} ni \frac{5}{3} ga bo'lish \frac{45}{8} ga k'paytirish \frac{5}{3} ga qaytarish.

$$\frac{45}{8}\times \frac{3}{5}$$

\frac{27}{8} hosil qilish uchun \frac{45}{8} va \frac{3}{5} ni ko'paytirish.

$$\frac{27}{8}$$

Omil

$$\frac{3 ^ {3}}{2 ^ {3}} = 3\frac{3}{8} = 3,375$$