2-1/4-(-1/8)-1/10 eching

$$2 - \frac { 1 } { 4 } - ( \frac { - 1 } { 8 } ) - \frac { 1 } { 10 }$$

Baholash

$$\frac{71}{40}=1,775$$

Yechim qadamlari

2 ni \frac{8}{4} kasrga o‘giring.

$$\frac{8}{4}-\frac{1}{4}-\frac{-1}{8}-\frac{1}{10}$$

\frac{8}{4} va \frac{1}{4} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{8-1}{4}-\frac{-1}{8}-\frac{1}{10}$$

7 olish uchun 8 dan 1 ni ayirish.

$$\frac{7}{4}-\frac{-1}{8}-\frac{1}{10}$$

\frac{-1}{8} kasri manfiy belgini olib tashlash bilan -\frac{1}{8} sifatida qayta yozilishi mumkin.

$$\frac{7}{4}-\left(-\frac{1}{8}\right)-\frac{1}{10}$$

-\frac{1}{8} ning teskarisi \frac{1}{8} ga teng.

$$\frac{7}{4}+\frac{1}{8}-\frac{1}{10}$$

4 va 8 ning eng kichik umumiy karralisi 8 ga teng. \frac{7}{4} va \frac{1}{8} ni 8 maxraj bilan kasrlarga aylantirib oling.

$$\frac{14}{8}+\frac{1}{8}-\frac{1}{10}$$

\frac{14}{8} va \frac{1}{8} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{14+1}{8}-\frac{1}{10}$$

15 olish uchun 14 va 1'ni qo'shing.

$$\frac{15}{8}-\frac{1}{10}$$

8 va 10 ning eng kichik umumiy karralisi 40 ga teng. \frac{15}{8} va \frac{1}{10} ni 40 maxraj bilan kasrlarga aylantirib oling.

$$\frac{75}{40}-\frac{4}{40}$$

\frac{75}{40} va \frac{4}{40} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{75-4}{40}$$

71 olish uchun 75 dan 4 ni ayirish.

$$\frac{71}{40}$$

Omil

$$\frac{71}{2 ^ {3} \cdot 5} = 1\frac{31}{40} = 1,775$$