6*(2/18+7/30) eching

$$6 \times ( \frac { 2 } { 18 } + \frac { 7 } { 30 } )$$

Baholash

$$\frac{31}{15}\approx 2,066666667$$

Yechim qadamlari

\frac{2}{18} ulushini 2 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$6\left(\frac{1}{9}+\frac{7}{30}\right)$$

9 va 30 ning eng kichik umumiy karralisi 90 ga teng. \frac{1}{9} va \frac{7}{30} ni 90 maxraj bilan kasrlarga aylantirib oling.

$$6\left(\frac{10}{90}+\frac{21}{90}\right)$$

\frac{10}{90} va \frac{21}{90} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$6\times \frac{10+21}{90}$$

31 olish uchun 10 va 21'ni qo'shing.

$$6\times \frac{31}{90}$$

6\times \frac{31}{90} ni yagona kasrga aylantiring.

$$\frac{6\times 31}{90}$$

186 hosil qilish uchun 6 va 31 ni ko'paytirish.

$$\frac{186}{90}$$

\frac{186}{90} ulushini 6 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{31}{15}$$

Omil

$$\frac{31}{3 \cdot 5} = 2\frac{1}{15} = 2,066666666666667$$