71/2div1*2-{12*(1/3-03)-3/20} eching

$$7 \frac { 1 } { 2 } \div 1 \cdot 2 - \{ 12 \times ( \frac { 1 } { 3 } - 03 ) - \frac { 3 } { 20 } \}$$

Baholash

$$\frac{223}{20}=11,15$$

Yechim qadamlari

14 hosil qilish uchun 7 va 2 ni ko'paytirish.

$$\frac{\frac{14+1}{2}}{1}\times 2-\left(12\left(\frac{1}{3}-0\times 3\right)-\frac{3}{20}\right)$$

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

$$\frac{\frac{15}{2}}{1}\times 2-\left(12\left(\frac{1}{3}-0\times 3\right)-\frac{3}{20}\right)$$

Har qanday son birga bo‘linganda, natija o‘zi chiqadi.

$$\frac{15}{2}\times 2-\left(12\left(\frac{1}{3}-0\times 3\right)-\frac{3}{20}\right)$$

2 va 2 ni qisqartiring.

$$15-\left(12\left(\frac{1}{3}-0\times 3\right)-\frac{3}{20}\right)$$

0 hosil qilish uchun 0 va 3 ni ko'paytirish.

$$15-\left(12\left(\frac{1}{3}-0\right)-\frac{3}{20}\right)$$

\frac{1}{3} olish uchun \frac{1}{3} dan 0 ni ayirish.

$$15-\left(12\times \frac{1}{3}-\frac{3}{20}\right)$$

\frac{12}{3} hosil qilish uchun 12 va \frac{1}{3} ni ko'paytirish.

$$15-\left(\frac{12}{3}-\frac{3}{20}\right)$$

4 ni olish uchun 12 ni 3 ga bo‘ling.

$$15-\left(4-\frac{3}{20}\right)$$

4 ni \frac{80}{20} kasrga o‘giring.

$$15-\left(\frac{80}{20}-\frac{3}{20}\right)$$

\frac{80}{20} va \frac{3}{20} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$15-\frac{80-3}{20}$$

77 olish uchun 80 dan 3 ni ayirish.

$$15-\frac{77}{20}$$

15 ni \frac{300}{20} kasrga o‘giring.

$$\frac{300}{20}-\frac{77}{20}$$

\frac{300}{20} va \frac{77}{20} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{300-77}{20}$$

223 olish uchun 300 dan 77 ni ayirish.

$$\frac{223}{20}$$

Omil

$$\frac{223}{2 ^ {2} \cdot 5} = 11\frac{3}{20} = 11,15$$