(2/1)-3(-1/2)+2(0/-2) eching

$$( \frac { 2 } { 1 } ) - 3 ( \frac { - 1 } { 2 } ) + 2 ( \frac { 0 } { - 2 } )$$

Baholash

$$\frac{7}{2}=3,5$$

Yechim qadamlari

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

$$2-3\times \frac{-1}{2}+2\times \frac{0}{-2}$$

\frac{-1}{2} kasri manfiy belgini olib tashlash bilan -\frac{1}{2} sifatida qayta yozilishi mumkin.

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

3\left(-\frac{1}{2}\right) ni yagona kasrga aylantiring.

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

-3 hosil qilish uchun 3 va -1 ni ko'paytirish.

$$2-\frac{-3}{2}+2\times \frac{0}{-2}$$

\frac{-3}{2} kasri manfiy belgini olib tashlash bilan -\frac{3}{2} sifatida qayta yozilishi mumkin.

$$2-\left(-\frac{3}{2}\right)+2\times \frac{0}{-2}$$

-\frac{3}{2} ning teskarisi \frac{3}{2} ga teng.

$$2+\frac{3}{2}+2\times \frac{0}{-2}$$

2 ni \frac{4}{2} kasrga o‘giring.

$$\frac{4}{2}+\frac{3}{2}+2\times \frac{0}{-2}$$

\frac{4}{2} va \frac{3}{2} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{4+3}{2}+2\times \frac{0}{-2}$$

7 olish uchun 4 va 3'ni qo'shing.

$$\frac{7}{2}+2\times \frac{0}{-2}$$

Nol bo‘lmagan har qanday sonni nolga ko‘paytirsangiz, nol bo‘ladi.

$$\frac{7}{2}+2\times 0$$

0 hosil qilish uchun 2 va 0 ni ko'paytirish.

$$\frac{7}{2}+0$$

\frac{7}{2} olish uchun \frac{7}{2} va 0'ni qo'shing.

$$\frac{7}{2}$$

Omil

$$\frac{7}{2} = 3\frac{1}{2} = 3,5$$