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

$$1+20-5 \times \frac{ 7 }{ 3 } +7-2 \times \frac{ 12 }{ 2 }$$

Baholash

$$\frac{13}{3}\approx 4,333333333$$

Yechim qadamlari

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

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

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

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

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

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

21 ni \frac{63}{3} kasrga o‘giring.

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

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

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

28 olish uchun 63 dan 35 ni ayirish.

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

7 ni \frac{21}{3} kasrga o‘giring.

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

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

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

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

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

6 ni olish uchun 12 ni 2 ga bo‘ling.

$$\frac{49}{3}-2\times 6$$

12 hosil qilish uchun 2 va 6 ni ko'paytirish.

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

12 ni \frac{36}{3} kasrga o‘giring.

$$\frac{49}{3}-\frac{36}{3}$$

\frac{49}{3} va \frac{36}{3} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{49-36}{3}$$

13 olish uchun 49 dan 36 ni ayirish.

$$\frac{13}{3}$$

Omil

$$\frac{13}{3} = 4\frac{1}{3} = 4,333333333333333$$