7/30+7/60+7/23 eching

$$\frac { 7 } { 30 } + \frac { 7 } { 60 } + \frac { 7 } { 23 }$$

Baholash

$$\frac{301}{460}\approx 0,654347826$$

Yechim qadamlari

30 va 60 ning eng kichik umumiy karralisi 60 ga teng. \frac{7}{30} va \frac{7}{60} ni 60 maxraj bilan kasrlarga aylantirib oling.

$$\frac{14}{60}+\frac{7}{60}+\frac{7}{23}$$

\frac{14}{60} va \frac{7}{60} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{14+7}{60}+\frac{7}{23}$$

21 olish uchun 14 va 7'ni qo'shing.

$$\frac{21}{60}+\frac{7}{23}$$

\frac{21}{60} ulushini 3 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{7}{20}+\frac{7}{23}$$

20 va 23 ning eng kichik umumiy karralisi 460 ga teng. \frac{7}{20} va \frac{7}{23} ni 460 maxraj bilan kasrlarga aylantirib oling.

$$\frac{161}{460}+\frac{140}{460}$$

\frac{161}{460} va \frac{140}{460} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{161+140}{460}$$

301 olish uchun 161 va 140'ni qo'shing.

$$\frac{301}{460}$$

Omil

$$\frac{7 \cdot 43}{2 ^ {2} \cdot 5 \cdot 23} = 0,6543478260869565$$