12div(1/3+1/4) eching

$$12 \div ( \frac { 1 } { 3 } + \frac { 1 } { 4 } )$$

Baholash

$$\frac{144}{7}\approx 20,571428571$$

Yechim qadamlari

3 va 4 ning eng kichik umumiy karralisi 12 ga teng. \frac{1}{3} va \frac{1}{4} ni 12 maxraj bilan kasrlarga aylantirib oling.

$$\frac{12}{\frac{4}{12}+\frac{3}{12}}$$

\frac{4}{12} va \frac{3}{12} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{12}{\frac{4+3}{12}}$$

7 olish uchun 4 va 3'ni qo'shing.

$$\frac{12}{\frac{7}{12}}$$

12 ni \frac{7}{12} ga bo'lish 12 ga k'paytirish \frac{7}{12} ga qaytarish.

$$12\times \frac{12}{7}$$

12\times \frac{12}{7} ni yagona kasrga aylantiring.

$$\frac{12\times 12}{7}$$

144 hosil qilish uchun 12 va 12 ni ko'paytirish.

$$\frac{144}{7}$$

Omil

$$\frac{2 ^ {4} \cdot 3 ^ {2}}{7} = 20\frac{4}{7} = 20,571428571428573$$