71/30-85/6 eching

$$7 \frac { 1 } { 30 } - 8 \frac { 5 } { 6 }$$

Baholash

$$-\frac{9}{5}=-1,8$$

Yechim qadamlari

210 hosil qilish uchun 7 va 30 ni ko'paytirish.

$$\frac{210+1}{30}-\frac{8\times 6+5}{6}$$

211 olish uchun 210 va 1'ni qo'shing.

$$\frac{211}{30}-\frac{8\times 6+5}{6}$$

48 hosil qilish uchun 8 va 6 ni ko'paytirish.

$$\frac{211}{30}-\frac{48+5}{6}$$

53 olish uchun 48 va 5'ni qo'shing.

$$\frac{211}{30}-\frac{53}{6}$$

30 va 6 ning eng kichik umumiy karralisi 30 ga teng. \frac{211}{30} va \frac{53}{6} ni 30 maxraj bilan kasrlarga aylantirib oling.

$$\frac{211}{30}-\frac{265}{30}$$

\frac{211}{30} va \frac{265}{30} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{211-265}{30}$$

-54 olish uchun 211 dan 265 ni ayirish.

$$\frac{-54}{30}$$

\frac{-54}{30} ulushini 6 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$-\frac{9}{5}$$

Omil

$$-\frac{9}{5} = -1\frac{4}{5} = -1,8$$