-81/8+-31/20+7/10= eching

$$- 8 \frac { 1 } { 8 } + - 3 \frac { 1 } { 20 } + \frac { 7 } { 10 } =$$

Baholash

$$-\frac{419}{40}=-10,475$$

Yechim qadamlari

64 hosil qilish uchun 8 va 8 ni ko'paytirish.

$$-\frac{64+1}{8}-\frac{3\times 20+1}{20}+\frac{7}{10}$$

65 olish uchun 64 va 1'ni qo'shing.

$$-\frac{65}{8}-\frac{3\times 20+1}{20}+\frac{7}{10}$$

60 hosil qilish uchun 3 va 20 ni ko'paytirish.

$$-\frac{65}{8}-\frac{60+1}{20}+\frac{7}{10}$$

61 olish uchun 60 va 1'ni qo'shing.

$$-\frac{65}{8}-\frac{61}{20}+\frac{7}{10}$$

8 va 20 ning eng kichik umumiy karralisi 40 ga teng. -\frac{65}{8} va \frac{61}{20} ni 40 maxraj bilan kasrlarga aylantirib oling.

$$-\frac{325}{40}-\frac{122}{40}+\frac{7}{10}$$

-\frac{325}{40} va \frac{122}{40} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{-325-122}{40}+\frac{7}{10}$$

-447 olish uchun -325 dan 122 ni ayirish.

$$-\frac{447}{40}+\frac{7}{10}$$

40 va 10 ning eng kichik umumiy karralisi 40 ga teng. -\frac{447}{40} va \frac{7}{10} ni 40 maxraj bilan kasrlarga aylantirib oling.

$$-\frac{447}{40}+\frac{28}{40}$$

-\frac{447}{40} va \frac{28}{40} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{-447+28}{40}$$

-419 olish uchun -447 va 28'ni qo'shing.

$$-\frac{419}{40}$$

Omil

$$-\frac{419}{40} = -10\frac{19}{40} = -10,475$$