1/4+2/7+1/2 eching

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

Baholash

$$\frac{29}{28}\approx 1,035714286$$

Yechim qadamlari

4 va 7 ning eng kichik umumiy karralisi 28 ga teng. \frac{1}{4} va \frac{2}{7} ni 28 maxraj bilan kasrlarga aylantirib oling.

$$\frac{7}{28}+\frac{8}{28}+\frac{1}{2}$$

\frac{7}{28} va \frac{8}{28} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{7+8}{28}+\frac{1}{2}$$

15 olish uchun 7 va 8'ni qo'shing.

$$\frac{15}{28}+\frac{1}{2}$$

28 va 2 ning eng kichik umumiy karralisi 28 ga teng. \frac{15}{28} va \frac{1}{2} ni 28 maxraj bilan kasrlarga aylantirib oling.

$$\frac{15}{28}+\frac{14}{28}$$

\frac{15}{28} va \frac{14}{28} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{15+14}{28}$$

29 olish uchun 15 va 14'ni qo'shing.

$$\frac{29}{28}$$

Omil

$$\frac{29}{2 ^ {2} \cdot 7} = 1\frac{1}{28} = 1,0357142857142858$$