3/5+6/7+8/4 eching

$$\frac { 3 } { 5 } + \frac { 6 } { 7 } + \frac { 8 } { 4 }$$

Baholash

$$\frac{121}{35}\approx 3,457142857$$

Yechim qadamlari

5 va 7 ning eng kichik umumiy karralisi 35 ga teng. \frac{3}{5} va \frac{6}{7} ni 35 maxraj bilan kasrlarga aylantirib oling.

$$\frac{21}{35}+\frac{30}{35}+\frac{8}{4}$$

\frac{21}{35} va \frac{30}{35} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{21+30}{35}+\frac{8}{4}$$

51 olish uchun 21 va 30'ni qo'shing.

$$\frac{51}{35}+\frac{8}{4}$$

2 ni olish uchun 8 ni 4 ga bo‘ling.

$$\frac{51}{35}+2$$

2 ni \frac{70}{35} kasrga o‘giring.

$$\frac{51}{35}+\frac{70}{35}$$

\frac{51}{35} va \frac{70}{35} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{51+70}{35}$$

121 olish uchun 51 va 70'ni qo'shing.

$$\frac{121}{35}$$

Omil

$$\frac{11 ^ {2}}{5 \cdot 7} = 3\frac{16}{35} = 3,4571428571428573$$