12/4+31/7 eching

$$1 \frac { 2 } { 4 } + 3 \frac { 1 } { 7 }$$

Baholash

$$\frac{65}{14}\approx 4,642857143$$

Yechim qadamlari

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

$$\frac{4+2}{4}+\frac{3\times 7+1}{7}$$

6 olish uchun 4 va 2'ni qo'shing.

$$\frac{6}{4}+\frac{3\times 7+1}{7}$$

\frac{6}{4} ulushini 2 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{3}{2}+\frac{3\times 7+1}{7}$$

21 hosil qilish uchun 3 va 7 ni ko'paytirish.

$$\frac{3}{2}+\frac{21+1}{7}$$

22 olish uchun 21 va 1'ni qo'shing.

$$\frac{3}{2}+\frac{22}{7}$$

2 va 7 ning eng kichik umumiy karralisi 14 ga teng. \frac{3}{2} va \frac{22}{7} ni 14 maxraj bilan kasrlarga aylantirib oling.

$$\frac{21}{14}+\frac{44}{14}$$

\frac{21}{14} va \frac{44}{14} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{21+44}{14}$$

65 olish uchun 21 va 44'ni qo'shing.

$$\frac{65}{14}$$

Omil

$$\frac{5 \cdot 13}{2 \cdot 7} = 4\frac{9}{14} = 4,642857142857143$$