(2/3+4/5)+(6/2*3/4) eching

$$( \frac { 2 } { 3 } + \frac { 4 } { 5 } ) + ( \frac { 6 } { 2 } \cdot \frac { 3 } { 4 } )$$

Baholash

$$\frac{223}{60}\approx 3,716666667$$

Yechim qadamlari

3 va 5 ning eng kichik umumiy karralisi 15 ga teng. \frac{2}{3} va \frac{4}{5} ni 15 maxraj bilan kasrlarga aylantirib oling.

$$\frac{10}{15}+\frac{12}{15}+\frac{6}{2}\times \frac{3}{4}$$

\frac{10}{15} va \frac{12}{15} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{10+12}{15}+\frac{6}{2}\times \frac{3}{4}$$

22 olish uchun 10 va 12'ni qo'shing.

$$\frac{22}{15}+\frac{6}{2}\times \frac{3}{4}$$

3 ni olish uchun 6 ni 2 ga bo‘ling.

$$\frac{22}{15}+3\times \frac{3}{4}$$

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

$$\frac{22}{15}+\frac{3\times 3}{4}$$

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

$$\frac{22}{15}+\frac{9}{4}$$

15 va 4 ning eng kichik umumiy karralisi 60 ga teng. \frac{22}{15} va \frac{9}{4} ni 60 maxraj bilan kasrlarga aylantirib oling.

$$\frac{88}{60}+\frac{135}{60}$$

\frac{88}{60} va \frac{135}{60} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{88+135}{60}$$

223 olish uchun 88 va 135'ni qo'shing.

$$\frac{223}{60}$$

Omil

$$\frac{223}{2 ^ {2} \cdot 3 \cdot 5} = 3\frac{43}{60} = 3,716666666666667$$