11/2+2/5div13/4 eching

$$1 \frac { 1 } { 2 } + \frac { 2 } { 5 } \div 1 \frac { 3 } { 4 }$$

Baholash

$$\frac{121}{70}\approx 1,728571429$$

Yechim qadamlari

2 hosil qilish uchun 1 va 2 ni ko'paytirish.

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

3 olish uchun 2 va 1'ni qo'shing.

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

\frac{2}{5} ni \frac{1\times 4+3}{4} ga bo'lish \frac{2}{5} ga k'paytirish \frac{1\times 4+3}{4} ga qaytarish.

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

8 hosil qilish uchun 2 va 4 ni ko'paytirish.

$$\frac{3}{2}+\frac{8}{5\left(1\times 4+3\right)}$$

4 hosil qilish uchun 1 va 4 ni ko'paytirish.

$$\frac{3}{2}+\frac{8}{5\left(4+3\right)}$$

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

$$\frac{3}{2}+\frac{8}{5\times 7}$$

35 hosil qilish uchun 5 va 7 ni ko'paytirish.

$$\frac{3}{2}+\frac{8}{35}$$

2 va 35 ning eng kichik umumiy karralisi 70 ga teng. \frac{3}{2} va \frac{8}{35} ni 70 maxraj bilan kasrlarga aylantirib oling.

$$\frac{105}{70}+\frac{16}{70}$$

\frac{105}{70} va \frac{16}{70} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{105+16}{70}$$

121 olish uchun 105 va 16'ni qo'shing.

$$\frac{121}{70}$$

Omil

$$\frac{11 ^ {2}}{2 \cdot 5 \cdot 7} = 1\frac{51}{70} = 1,7285714285714286$$