(-25)-1/2+(-1/5) eching

$$( - 25 ) - \frac { 1 } { 2 } + ( - \frac { 1 } { 5 } )$$

Baholash

$$-\frac{257}{10}=-25,7$$

Yechim qadamlari

-25 ni -\frac{50}{2} kasrga o‘giring.

$$-\frac{50}{2}-\frac{1}{2}-\frac{1}{5}$$

-\frac{50}{2} va \frac{1}{2} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{-50-1}{2}-\frac{1}{5}$$

-51 olish uchun -50 dan 1 ni ayirish.

$$-\frac{51}{2}-\frac{1}{5}$$

2 va 5 ning eng kichik umumiy karralisi 10 ga teng. -\frac{51}{2} va \frac{1}{5} ni 10 maxraj bilan kasrlarga aylantirib oling.

$$-\frac{255}{10}-\frac{2}{10}$$

-\frac{255}{10} va \frac{2}{10} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{-255-2}{10}$$

-257 olish uchun -255 dan 2 ni ayirish.

$$-\frac{257}{10}$$

Omil

$$-\frac{257}{10} = -25\frac{7}{10} = -25,7$$