23/5+12/3-7/15 eching

$$2 \frac { 3 } { 5 } + 1 \frac { 2 } { 3 } - \frac { 7 } { 15 }$$

Baholash

$$\frac{19}{5}=3,8$$

Yechim qadamlari

10 hosil qilish uchun 2 va 5 ni ko'paytirish.

$$\frac{10+3}{5}+\frac{1\times 3+2}{3}-\frac{7}{15}$$

13 olish uchun 10 va 3'ni qo'shing.

$$\frac{13}{5}+\frac{1\times 3+2}{3}-\frac{7}{15}$$

3 hosil qilish uchun 1 va 3 ni ko'paytirish.

$$\frac{13}{5}+\frac{3+2}{3}-\frac{7}{15}$$

5 olish uchun 3 va 2'ni qo'shing.

$$\frac{13}{5}+\frac{5}{3}-\frac{7}{15}$$

5 va 3 ning eng kichik umumiy karralisi 15 ga teng. \frac{13}{5} va \frac{5}{3} ni 15 maxraj bilan kasrlarga aylantirib oling.

$$\frac{39}{15}+\frac{25}{15}-\frac{7}{15}$$

\frac{39}{15} va \frac{25}{15} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{39+25}{15}-\frac{7}{15}$$

64 olish uchun 39 va 25'ni qo'shing.

$$\frac{64}{15}-\frac{7}{15}$$

\frac{64}{15} va \frac{7}{15} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{64-7}{15}$$

57 olish uchun 64 dan 7 ni ayirish.

$$\frac{57}{15}$$

\frac{57}{15} ulushini 3 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{19}{5}$$

Omil

$$\frac{19}{5} = 3\frac{4}{5} = 3,8$$