2/3+2/5/frac{2{3}-2/5}= eching

$$\frac { \frac { 2 } { 3 } + \frac { 2 } { 5 } } { \frac { 2 } { 3 } - \frac { 2 } { 5 } } =$$

Baholash

$$4$$

Yechim qadamlari

3 va 5 ning eng kichik umumiy karralisi 15 ga teng. \frac{2}{3} va \frac{2}{5} ni 15 maxraj bilan kasrlarga aylantirib oling.

$$\frac{\frac{10}{15}+\frac{6}{15}}{\frac{2}{3}-\frac{2}{5}}$$

\frac{10}{15} va \frac{6}{15} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{\frac{10+6}{15}}{\frac{2}{3}-\frac{2}{5}}$$

16 olish uchun 10 va 6'ni qo'shing.

$$\frac{\frac{16}{15}}{\frac{2}{3}-\frac{2}{5}}$$

3 va 5 ning eng kichik umumiy karralisi 15 ga teng. \frac{2}{3} va \frac{2}{5} ni 15 maxraj bilan kasrlarga aylantirib oling.

$$\frac{\frac{16}{15}}{\frac{10}{15}-\frac{6}{15}}$$

\frac{10}{15} va \frac{6}{15} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{\frac{16}{15}}{\frac{10-6}{15}}$$

4 olish uchun 10 dan 6 ni ayirish.

$$\frac{\frac{16}{15}}{\frac{4}{15}}$$

\frac{16}{15} ni \frac{4}{15} ga bo'lish \frac{16}{15} ga k'paytirish \frac{4}{15} ga qaytarish.

$$\frac{16}{15}\times \frac{15}{4}$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{16}{15} ni \frac{15}{4} ga ko‘paytiring.

$$\frac{16\times 15}{15\times 4}$$

Surat va maxrajdagi ikkala 15 ni qisqartiring.

$$\frac{16}{4}$$

4 ni olish uchun 16 ni 4 ga bo‘ling.

$$4$$

Omil

$$2^{2}$$