3-1/5+1/2 eching

$$3 - \frac { 1 } { 5 } + \frac { 1 } { 2 }$$

Baholash

$$\frac{33}{10}=3,3$$

Yechim qadamlari

3 ni \frac{15}{5} kasrga o‘giring.

$$\frac{15}{5}-\frac{1}{5}+\frac{1}{2}$$

\frac{15}{5} va \frac{1}{5} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{15-1}{5}+\frac{1}{2}$$

14 olish uchun 15 dan 1 ni ayirish.

$$\frac{14}{5}+\frac{1}{2}$$

5 va 2 ning eng kichik umumiy karralisi 10 ga teng. \frac{14}{5} va \frac{1}{2} ni 10 maxraj bilan kasrlarga aylantirib oling.

$$\frac{28}{10}+\frac{5}{10}$$

\frac{28}{10} va \frac{5}{10} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{28+5}{10}$$

33 olish uchun 28 va 5'ni qo'shing.

$$\frac{33}{10}$$

Omil

$$\frac{3 \cdot 11}{2 \cdot 5} = 3\frac{3}{10} = 3,3$$