1+2-3*4div5+6-7*8div9 eching

$$1+2-3 \times 4 \div 5+6-7 \times 8 \div 9$$

Baholash

$$\frac{17}{45}\approx 0,377777778$$

Yechim qadamlari

3 olish uchun 1 va 2'ni qo'shing.

$$3-\frac{3\times 4}{5}+6-\frac{7\times 8}{9}$$

12 hosil qilish uchun 3 va 4 ni ko'paytirish.

$$3-\frac{12}{5}+6-\frac{7\times 8}{9}$$

3 ni \frac{15}{5} kasrga o‘giring.

$$\frac{15}{5}-\frac{12}{5}+6-\frac{7\times 8}{9}$$

\frac{15}{5} va \frac{12}{5} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{15-12}{5}+6-\frac{7\times 8}{9}$$

3 olish uchun 15 dan 12 ni ayirish.

$$\frac{3}{5}+6-\frac{7\times 8}{9}$$

6 ni \frac{30}{5} kasrga o‘giring.

$$\frac{3}{5}+\frac{30}{5}-\frac{7\times 8}{9}$$

\frac{3}{5} va \frac{30}{5} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{3+30}{5}-\frac{7\times 8}{9}$$

33 olish uchun 3 va 30'ni qo'shing.

$$\frac{33}{5}-\frac{7\times 8}{9}$$

56 hosil qilish uchun 7 va 8 ni ko'paytirish.

$$\frac{33}{5}-\frac{56}{9}$$

5 va 9 ning eng kichik umumiy karralisi 45 ga teng. \frac{33}{5} va \frac{56}{9} ni 45 maxraj bilan kasrlarga aylantirib oling.

$$\frac{297}{45}-\frac{280}{45}$$

\frac{297}{45} va \frac{280}{45} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{297-280}{45}$$

17 olish uchun 297 dan 280 ni ayirish.

$$\frac{17}{45}$$

Omil

$$\frac{17}{3 ^ {2} \cdot 5} = 0,37777777777777777$$