9-(6/7+7)+[2-1/2-(7-1/2)]+3 eching

$$9 - ( \frac { 6 } { 7 } + 7 ) + [ 2 - \frac { 1 } { 2 } - ( 7 - \frac { 1 } { 2 } ) ] + 3$$

Baholash

$$-\frac{6}{7}\approx -0,857142857$$

Yechim qadamlari

7 ni \frac{49}{7} kasrga o‘giring.

$$9-\left(\frac{6}{7}+\frac{49}{7}\right)+2-\frac{1}{2}-\left(7-\frac{1}{2}\right)+3$$

\frac{6}{7} va \frac{49}{7} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$9-\frac{6+49}{7}+2-\frac{1}{2}-\left(7-\frac{1}{2}\right)+3$$

55 olish uchun 6 va 49'ni qo'shing.

$$9-\frac{55}{7}+2-\frac{1}{2}-\left(7-\frac{1}{2}\right)+3$$

9 ni \frac{63}{7} kasrga o‘giring.

$$\frac{63}{7}-\frac{55}{7}+2-\frac{1}{2}-\left(7-\frac{1}{2}\right)+3$$

\frac{63}{7} va \frac{55}{7} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{63-55}{7}+2-\frac{1}{2}-\left(7-\frac{1}{2}\right)+3$$

8 olish uchun 63 dan 55 ni ayirish.

$$\frac{8}{7}+2-\frac{1}{2}-\left(7-\frac{1}{2}\right)+3$$

2 ni \frac{4}{2} kasrga o‘giring.

$$\frac{8}{7}+\frac{4}{2}-\frac{1}{2}-\left(7-\frac{1}{2}\right)+3$$

\frac{4}{2} va \frac{1}{2} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{8}{7}+\frac{4-1}{2}-\left(7-\frac{1}{2}\right)+3$$

3 olish uchun 4 dan 1 ni ayirish.

$$\frac{8}{7}+\frac{3}{2}-\left(7-\frac{1}{2}\right)+3$$

7 ni \frac{14}{2} kasrga o‘giring.

$$\frac{8}{7}+\frac{3}{2}-\left(\frac{14}{2}-\frac{1}{2}\right)+3$$

\frac{14}{2} va \frac{1}{2} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{8}{7}+\frac{3}{2}-\frac{14-1}{2}+3$$

13 olish uchun 14 dan 1 ni ayirish.

$$\frac{8}{7}+\frac{3}{2}-\frac{13}{2}+3$$

\frac{3}{2} va \frac{13}{2} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{8}{7}+\frac{3-13}{2}+3$$

-10 olish uchun 3 dan 13 ni ayirish.

$$\frac{8}{7}+\frac{-10}{2}+3$$

-5 ni olish uchun -10 ni 2 ga bo‘ling.

$$\frac{8}{7}-5+3$$

5 ni \frac{35}{7} kasrga o‘giring.

$$\frac{8}{7}-\frac{35}{7}+3$$

\frac{8}{7} va \frac{35}{7} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{8-35}{7}+3$$

-27 olish uchun 8 dan 35 ni ayirish.

$$-\frac{27}{7}+3$$

3 ni \frac{21}{7} kasrga o‘giring.

$$-\frac{27}{7}+\frac{21}{7}$$

-\frac{27}{7} va \frac{21}{7} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{-27+21}{7}$$

-6 olish uchun -27 va 21'ni qo'shing.

$$-\frac{6}{7}$$

Omil

$$-\frac{6}{7} = -0,8571428571428571$$