-1/5--1/2= eching

$$\frac { - 1 } { 5 } - \frac { - 1 } { 2 } =$$

Baholash

$$\frac{3}{10}=0,3$$

Yechim qadamlari

\frac{-1}{5} kasri manfiy belgini olib tashlash bilan -\frac{1}{5} sifatida qayta yozilishi mumkin.

$$-\frac{1}{5}-\frac{-1}{2}$$

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

$$-\frac{1}{5}-\left(-\frac{1}{2}\right)$$

-\frac{1}{2} ning teskarisi \frac{1}{2} ga teng.

$$-\frac{1}{5}+\frac{1}{2}$$

5 va 2 ning eng kichik umumiy karralisi 10 ga teng. -\frac{1}{5} va \frac{1}{2} ni 10 maxraj bilan kasrlarga aylantirib oling.

$$-\frac{2}{10}+\frac{5}{10}$$

-\frac{2}{10} va \frac{5}{10} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{-2+5}{10}$$

3 olish uchun -2 va 5'ni qo'shing.

$$\frac{3}{10}$$

Omil

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