1+20-5*7/3+7-2*12*2:2 eching

$$1 + 20 - 5 \times 7 / 3 + 7 - 2 \times 12 \cdot 2 : 2$$

Baholash

$$-\frac{23}{3}\approx -7,666666667$$

Yechim qadamlari

21 olish uchun 1 va 20'ni qo'shing.

$$21-5\times \frac{7}{3}+7-\frac{2\times 12\times 2}{2}$$

5\times \frac{7}{3} ni yagona kasrga aylantiring.

$$21-\frac{5\times 7}{3}+7-\frac{2\times 12\times 2}{2}$$

35 hosil qilish uchun 5 va 7 ni ko'paytirish.

$$21-\frac{35}{3}+7-\frac{2\times 12\times 2}{2}$$

21 ni \frac{63}{3} kasrga o‘giring.

$$\frac{63}{3}-\frac{35}{3}+7-\frac{2\times 12\times 2}{2}$$

\frac{63}{3} va \frac{35}{3} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{63-35}{3}+7-\frac{2\times 12\times 2}{2}$$

28 olish uchun 63 dan 35 ni ayirish.

$$\frac{28}{3}+7-\frac{2\times 12\times 2}{2}$$

7 ni \frac{21}{3} kasrga o‘giring.

$$\frac{28}{3}+\frac{21}{3}-\frac{2\times 12\times 2}{2}$$

\frac{28}{3} va \frac{21}{3} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{28+21}{3}-\frac{2\times 12\times 2}{2}$$

49 olish uchun 28 va 21'ni qo'shing.

$$\frac{49}{3}-\frac{2\times 12\times 2}{2}$$

2 va 2 ni qisqartiring.

$$\frac{49}{3}-12\times 2$$

24 hosil qilish uchun 12 va 2 ni ko'paytirish.

$$\frac{49}{3}-24$$

24 ni \frac{72}{3} kasrga o‘giring.

$$\frac{49}{3}-\frac{72}{3}$$

\frac{49}{3} va \frac{72}{3} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{49-72}{3}$$

-23 olish uchun 49 dan 72 ni ayirish.

$$-\frac{23}{3}$$

Omil

$$-\frac{23}{3} = -7\frac{2}{3} = -7,666666666666667$$