12div3/5-(-17/10)= eching

$$12 \div \frac { 3 } { 5 } - ( - 1 \frac { 7 } { 10 } ) =$$

Baholash

$$\frac{217}{10}=21,7$$

Yechim qadamlari

12 ni \frac{3}{5} ga bo'lish 12 ga k'paytirish \frac{3}{5} ga qaytarish.

$$12\times \frac{5}{3}-\left(-\frac{1\times 10+7}{10}\right)$$

12\times \frac{5}{3} ni yagona kasrga aylantiring.

$$\frac{12\times 5}{3}-\left(-\frac{1\times 10+7}{10}\right)$$

60 hosil qilish uchun 12 va 5 ni ko'paytirish.

$$\frac{60}{3}-\left(-\frac{1\times 10+7}{10}\right)$$

20 ni olish uchun 60 ni 3 ga bo‘ling.

$$20-\left(-\frac{1\times 10+7}{10}\right)$$

10 hosil qilish uchun 1 va 10 ni ko'paytirish.

$$20-\left(-\frac{10+7}{10}\right)$$

17 olish uchun 10 va 7'ni qo'shing.

$$20-\left(-\frac{17}{10}\right)$$

-\frac{17}{10} ning teskarisi \frac{17}{10} ga teng.

$$20+\frac{17}{10}$$

20 ni \frac{200}{10} kasrga o‘giring.

$$\frac{200}{10}+\frac{17}{10}$$

\frac{200}{10} va \frac{17}{10} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{200+17}{10}$$

217 olish uchun 200 va 17'ni qo'shing.

$$\frac{217}{10}$$

Omil

$$\frac{7 \cdot 31}{2 \cdot 5} = 21\frac{7}{10} = 21,7$$